With the O2 sensor, it is recommened to remove it and also refit it once the header is removed from the engine. Just loosen the O2 sensor nut and then turn the header, instead of twisting the sensor cable. Dealer mechanic recommended that, as the sensor cable can get damaged. I also fitted self sticking heat shield inside each of the 3 heat shields and had the headers ceramic coated inside and out. Exhaust is a lot cooler now and the exhaust is always shiny and clean! Good video! 👍
Thanks for a very informative look at your de-cat. I’d love to do this to my 2024 model, but I fear that my technical skills are lacking. Maybe I can get my local Triumph service department to tackle this job for me. Happy Trails!
Well, that was a heck of a job. I'll probably do it a bit easier on my Scrambler, with almost the same result. After I remove the tailpipe, I'll take a long drill and drill through the converter as best I can. Then I'll start the engine to blow the dust and obstructions out of the housing so they don't get stuck in the tailpipe. After that, I'll put the tailpipes back on. That will be less work as opening the housing and welding to remove the converter.
Nice work. Hoping to pick up a newer version so I don't have to do this, but good info anyway. I wonder if some thermal header wrap would fit on the pipes under those heat shields or if it would be too tight. This way you wouldn't block the vents on the heat shields and would still cut down on heat.
Follow up: I bought a 2022 1200 XC over the weekend, and it's got a slip-on already. There's definitely no CAT on the pipes leading up to the slip joint, it's just pipes, so I can confirm putting on a slip-on exhaust 2022 and newer will also De Cat your bike, shed weight, increase noise/fun, and reduce heat. :D
Fantastic video... This is something I can do all except the welding but I have a friend who is an excellent welder/farm mechanic 👍🏻 Excellent video thank you
Great video, thanks for detailed explanation. Easier to understand with a British accent. I'm from north of the border but it still works for me. ;) Again, thanks. Just picked up my 2019 XC recently and this is high on my list before the summer heat hits Atlanta.
A great job Proffessori, I fitted a new Zard system on my 1050 Tiger and a remapped it. Besides making the bike perform better it removed a fair bit of weight and bulk from the bike. Well done a budding Millyard in the making.
An excelent video which has me thinking of heading off to my garage with the metal cutting blade and the welding kit. Removing the cat seems to have made quite a difference to the performance of your bike so happy days. I am lucky enough to have several bikes purchased on the second hand market. When I contact my insurance company to add them on to my policy they ask me if the bike has been modified in any way. I always say that the bike looks to be original but as this is a second hand bike I have no knowledge of things that might have been done that are not obvious. As you have posted on You Tube I assume you will be on the blower ASAP to cough your sins so it would be interesting to hear if this has any implications to your premium! On a more mundane note when I have these bits apart I always have the cpooer anti seize at the ready for re-assembly.
Great video 🤟🏻 Easy job if you have the knowledge, skill and equipment. A preferred way for many including myself. I charge £70 for doing this but I believe you can pick stainless Decats pipes up for £140 now. I suppose that’s a realistic price point considering these current mental inflation times.
I've been toying with this idea for a little while, even picked up a spare set of headers. The aftermarket headers are a good option but I'm not keen on the weld lines, loosing the heat shield clips, or the different pipe bends that some of these pipes have. Is this a service that you offer and would you do a 900 Street Scrambler?
@@johncarrielies9118 I understand what you mean and totally agree. I always like OEM where ever possible. Yes I could possibly help of course. What year is your triumph?
@@johncarrielies9118 yes it shouldn’t be a problem 👍. Can you confirm the part number on the back of the cat should be something like 2202928 or 2202929
nice video. i have scrambler 1200 2023... they do the pipes without this rigth? but they put on the final of pipes.. i don't know... I'll get mine in a week, i'm very excited !
Yes, chopping up the exhaust is a bit scary, but before I started, I told myself that if it all went wrong I'd just go and buy an aftermarket replacement. In the event, it was a very easy job, as you can see from the video.
@Songs From The Saddle Yes, I think so. I need to plan this soon. For now I need to put lowering sprung first. Tried twice but don't have right tools at the moment. Ordered new spanners.
As a few people have left a similar comment it is worth explaining why I did not insert a baffle plate into the exhaust. Firstly, an engine does not need back pressure to function efficiently. That is a misunderstanding. You just need to look at the exhausts on drag bikes and drag cars to see that. Secondly, the decated Scrambler exhaust does still have back pressure, due to the silencer baffles. The purpose of a baffle plate would be to tune that backpressure to use it positively. The back pressure creates a reverse pulse wave at the exhaust manifold that can increase pressure differential and thereby improve scavenging. However, as this is a dynamic system (pulse frequency changes with revs) the exhaust can only be tuned to benefit power at a certain rev range. Improved scavenging is the product of careful matching of inflow through the injectors, valve timing and overlap and exhaust tuning. This means that if I were to fit a baffle, the benefit, if any, would be unknown without testing and tuning on a Dyno. I assume that the manufacturers of replacement header pipes do this, but again the benefits of installing an aftermarket header with an X pipe are uncertain if you are not also improving the inflow and remapping the fuelling. The whole point of my video was a free and simple solution to the heat problem. It was not intended as a bid to increase power. Because I also fitted a high-flow air filter and removed the airbox snorkel, this has unquestionably increase the engine power. Any further modification, such as welding in a baffle plate is pointless without looking at all these other factors and testing on a Dyno.
Sensacional ficou bom Mas o melhor é colocar um escape zard italiano a scrambler se transforma Parabéns pele iniciativa continue postando mais vídeos. Sobre a moto Tankyou
So it's a metal substrate? I remember reading a (Haynes or Bentley?) VW shop manual from back in the 1970s they recommended using a heavy prybar to smash out the ceramic substrate and shake it out. I think that was recommended if you were taking a Rabbit/Golf from the US to a country where only leaded gas was available. So you wouldn't clog the converter with lead oxides. In that case the substrate was ceramic, and it was brittle, so you could just break it apart and shake out the parts without cutting/welding the case.
I added a Zard silencer to my 2022 bike and the 02 sensors packed up after a year with it on the bike! Do you think with the cat removed they went bad?
@@SongsFromTheSaddle Interesting. Wonder if it is a Canadian dealership issue. The bike runs fine idles smoothly yet the check engine light stays on. Oh well another trip to the dealer! Thanks again for your detailed instructions and info on the Scrambler. What a bike!
@@carlbayard8729 I hope you get it sorted. It's probably just an error code if you removed the oxygen sensor. A reset should fix it. It might be worth getting a diagnostic tool. See my video on DealerTool. This is a UK based company, but I believe you can get something similar in the USA and Canada.
Hey ya, great video, I’m just about to do that to my street scrambler 900,2018 model, I already got Vance and Hines exhaust. I don’t want to bother you with any similar questions & if it is apologies, just want to know is there anything else I would need to do for bike apart from just what you did in video, as I read all comments and your response on no need to instal any baffles, but any adjustments I would need, any need for air intake filter change? Would appreciate your suggestions, Thanks
I made this change to reduce the heat on my leg, not to improve performance. However, I did also fit a high-flow air filter. But again, that was for convenience rather than performance. I would suggest that it is worth doing and it is not expensive. I fitted a DNA air filter.
Hi there I would like your thoughts, I now live in Finland and looking to buy a Triumph t140. The choice of Triumphs in Finland are few and far between and the prices are crazy, So I'm thinking of popping back to the UK to pick one up and riding it back, whats your thoughts? I will get a good one, but would it make it, I don't want to ship it thanks.
I removed the cat simply to overcome the heat problem, not to improve power. However, any power gains are unlikely to be great without also improving inflow. See my answer to other comments here about fitting a baffle in the exhaust
I wonder if it runs far to lean after decat. It can put a hole in the piston or cause damage round valves. I am very interested to know what a mechanic thinks and how have owners found it runs after a decat.
In the days of carbs, maybe this would have leaned the fuel air ratio so much that melted pistons would have been an issue. However with modern fuel injection, my understanding is the bikes ECU uses the O2 sensor to monitor the fuel /air ratio post combustion. It then adjusts the ratio at the injector accordingly. Therefore no worries about the bike running too lean.
Great video but you need some sort of baffle welding in to help with back pressure otherwise you'll loose some torque from the engine that's why aftermarket ones have a H pipe or X pipe
Hi Paul. As a few people have left a similar comment it is worth explaining why I did not insert a baffle plate into the exhaust. Firstly, an engine does not need back pressure to function efficiently. That is a misunderstanding. You just need to look at the exhausts on drag bikes and drag cars to see that. Secondly, the decated Scrambler exhaust does still have back pressure, due to the silencer baffles. The purpose of a baffle plate would be to tune that backpressure to use it positively. The back pressure creates a reverse pulse wave at the exhaust manifold that can increase pressure differential and thereby improve scavenging. However, as this is a dynamic system (pulse frequency changes with revs) the exhaust can only be tuned to benefit power at a certain rev range. Improved scavenging is the product of careful matching of inflow through the injectors, valve timing and overlap and exhaust tuning. This means that if I were to fit a baffle, the benefit, if any, would be unknown without testing and tuning on a Dyno. I assume that the manufacturers of replacement header pipes do this, but again the benefits of installing an aftermarket header with an X pipe are uncertain if you are not also improving the inflow and remapping the fuelling. The whole point of my video was a free and simple solution to the heat problem. It was not intended as a bid to increase power. Because I also fitted a high-flow air filter and removed the airbox snorkel, this has unquestionably increase the engine power. Any further modification, such as welding in a baffle plate is pointless without looking at all these other factors and testing on a Dyno.
@@SongsFromTheSaddle I hope you didn't think my comment was in anyway a criticism it's just most decat replacement pipes seem to have an H or X in them ,yet again another brilliant video unfortunately I haven't used a welder for years I learnt to use brazing rods as a teenager, I'm still trying to get a decent deal on a scrambler
Hi Paul. I'm not at all offended by your comments. You are entitled to disagree with me and to criticise my efforts. However I feel that without a baffle design that is tried and tested I would just be guessing, and could make the performance worse.
Hi, can you tell me if this helped with the heat a great deal? I know in theory it should but you’ve had time to ride it, did it change the temperature on your leg significantly? I live in a hot climate and have been eyeing this bike for some time, but every video I’ve ever watched they mention the heat on the leg and say “oh boy in a hot climate this would be a nightmare” or something to that effect, so I’m really curious if this helped significantly. Thanks!
The 1200 engine kicks out a lot of heat. I melted my trousers while riding pillion on my mate's bike. We live in Denmark, and it happened about 2 months ago.
@@scottkelley3263 I don’t think you need to weld anything, it slips right off. Depending on the year I guess, the 2022+ model years I believe it’s in the back, so a slip on exhaust decats your bike, the older model years I think you can buy an H pipe and that will decat your bike. If you don’t want to do either of those, you can cut it out, there’s a very simple video I seen of someone doing it. It’s stainless steel like the rest of the exhaust, you cut it open and pull the grey insert(cat) out and then MIG/TIG weld it back together. Looked really easy if you can do a simple weld, definitely will save you 300-400 bucks depending on the model year.
I am also curious on that as well. Everything I have heard is you need some type of baffle plate in there. If you didn't put a baffle plate, I am curious if you notice any loss in power throughout the entire power band ie low speed torque at lower RPM etc? Thanks for reporting back and this video. I love your videos and grateful for your honesty and genuine take.
As a few people have left a similar comment it is worth explaining why I did not insert a baffle plate into the exhaust. Firstly, an engine does not need back pressure to function efficiently. That is a misunderstanding. You just need to look at the exhausts on drag bikes and drag cars to see that. Secondly, the decated Scrambler exhaust does still have back pressure, due to the silencer baffles. The purpose of a baffle plate would be to tune that backpressure to use it positively. The back pressure creates a reverse pulse wave at the exhaust manifold that can increase pressure differential and thereby improve scavenging. However, as this is a dynamic system (pulse frequency changes with revs) the exhaust can only be tuned to benefit power at a certain rev range. Improved scavenging is the product of careful matching of inflow through the injectors, valve timing and overlap and exhaust tuning. This means that if I were to fit a baffle, the benefit, if any, would be unknown without testing and tuning on a Dyno. I assume that the manufacturers of replacement header pipes do this, but again the benefits of installing an aftermarket header with an X pipe are uncertain if you are not also improving the inflow and remapping the fuelling. The whole point of my video was a free and simple solution to the heat problem. It was not intended as a bid to increase power. Because I also fitted a high-flow air filter and removed the airbox snorkel, this has unquestionably increase the engine power. Any further modification, such as welding in a baffle plate is pointless without looking at all these other factors and testing on a Dyno.
@@SongsFromTheSaddle Great thank you for your detailed response and explanation. I am no where near as knowledgable as you hence why I asked the question. I just know what TecBikeParts mentioned in their de-cat video. Probably because they offered to weld plate in there for extra cost if you shipped it to them. It is great to know that not only did it reduce the heat but the added benefit was a little increase in power. I plan to do same as yours as any added power is bonus but not the main point of the de-cat as getting the heat lowered. Thanks again!
A few mot garages are getting wise to de cat procedures as car enthusiasts increasingly get into modifying their exhausts. BE WARNED! If you are still under warranty you should avoid it at any rate.
Just had a read on mot testing for motorbikes, no test on emissions, so no worries. You are correct older exhaust does fit newer bikes, I’ve fitted the arrow end can to my 21 bike, therefore an easy option for newer bikes to decat. Thanks for videos.
Why the hell did Triumph design it this way? So stupid. It’s my favorite bike in the world, but after driving one, I don’t think I can get deal with the heat, especially for my passenger.
Dude, it's only free if you have a mate who'll weld it back together. Most owners will not do this as it probably voids warranty. Probably better to get a later model and buy an earlier end can swap. No cutting and welding then.
@@SongsFromTheSaddle Erreur !! puisque la lecture des sondes lambda est erronée voire nulle ,, faut arrêter de faire et de faire croire n'inporte quoi .. ✌
With the O2 sensor, it is recommened to remove it and also refit it once the header is removed from the engine. Just loosen the O2 sensor nut and then turn the header, instead of twisting the sensor cable. Dealer mechanic recommended that, as the sensor cable can get damaged. I also fitted self sticking heat shield inside each of the 3 heat shields and had the headers ceramic coated inside and out. Exhaust is a lot cooler now and the exhaust is always shiny and clean!
Good video! 👍
Great tutorial. Your attention to detail leaves no room for any doubt removing and reinstall of the exhaust system.
Well done 👌👏👏👏
So, who is going to do the welding, you?😄
Although I was putting on a different decat, these instructions on how to dismantle were excellent. Thanks
Thanks for a very informative look at your de-cat.
I’d love to do this to my 2024 model, but I fear that my technical skills are lacking.
Maybe I can get my local Triumph service department to tackle this job for me.
Happy Trails!
Nice job, really useful video, thanks for taking the trouble to film and explain.
Well, that was a heck of a job. I'll probably do it a bit easier on my Scrambler, with almost the same result. After I remove the tailpipe, I'll take a long drill and drill through the converter as best I can. Then I'll start the engine to blow the dust and obstructions out of the housing so they don't get stuck in the tailpipe. After that, I'll put the tailpipes back on. That will be less work as opening the housing and welding to remove the converter.
Good luck with that
Nice work. Hoping to pick up a newer version so I don't have to do this, but good info anyway. I wonder if some thermal header wrap would fit on the pipes under those heat shields or if it would be too tight. This way you wouldn't block the vents on the heat shields and would still cut down on heat.
Follow up: I bought a 2022 1200 XC over the weekend, and it's got a slip-on already. There's definitely no CAT on the pipes leading up to the slip joint, it's just pipes, so I can confirm putting on a slip-on exhaust 2022 and newer will also De Cat your bike, shed weight, increase noise/fun, and reduce heat. :D
Fantastic video... This is something I can do all except the welding but I have a friend who is an excellent welder/farm mechanic 👍🏻
Excellent video thank you
My welding's not brilliant either - that's why I asked my friend to do it.
Great video, thanks for detailed explanation. Easier to understand with a British accent. I'm from north of the border but it still works for me. ;)
Again, thanks. Just picked up my 2019 XC recently and this is high on my list before the summer heat hits Atlanta.
Thanks. The usual comments I get from American viewers is that my accent sounds weird, I sound arrogant, or I mispronounce things.
A great job Proffessori, I fitted a new Zard system on my 1050 Tiger and a remapped it. Besides making the bike perform better it removed a fair bit of weight and bulk from the bike. Well done a budding Millyard in the making.
I’ve done the same process you did, except I’m going to wrap the cat box with exhaust wrapping all the way. Besides, it’ll be covered by the shields.
Very detailed and informative. A good watch. Thanks. 👍
Amazing tutorial! Thank you. 👍
Glad you enjoyed it!
An excelent video which has me thinking of heading off to my garage with the metal cutting blade and the welding kit. Removing the cat seems to have made quite a difference to the performance of your bike so happy days. I am lucky enough to have several bikes purchased on the second hand market. When I contact my insurance company to add them on to my policy they ask me if the bike has been modified in any way. I always say that the bike looks to be original but as this is a second hand bike I have no knowledge of things that might have been done that are not obvious. As you have posted on You Tube I assume you will be on the blower ASAP to cough your sins so it would be interesting to hear if this has any implications to your premium! On a more mundane note when I have these bits apart I always have the cpooer anti seize at the ready for re-assembly.
Great video 🤟🏻
Easy job if you have the knowledge, skill and equipment. A preferred way for many including myself. I charge £70 for doing this but I believe you can pick stainless Decats pipes up for £140 now. I suppose that’s a realistic price point considering these current mental inflation times.
I've been toying with this idea for a little while, even picked up a spare set of headers. The aftermarket headers are a good option but I'm not keen on the weld lines, loosing the heat shield clips, or the different pipe bends that some of these pipes have. Is this a service that you offer and would you do a 900 Street Scrambler?
@@johncarrielies9118 I understand what you mean and totally agree. I always like OEM where ever possible. Yes I could possibly help of course.
What year is your triumph?
@@Questioneverythingg730 Mine is a 2018 model.
@@johncarrielies9118 yes it shouldn’t be a problem 👍. Can you confirm the part number on the back of the cat should be something like 2202928 or 2202929
£70 sounds like a fair price for doing this, for anyone not confident to do it themselves, particularly the welding.
nice video. i have scrambler 1200 2023... they do the pipes without this rigth? but they put on the final of pipes.. i don't know... I'll get mine in a week, i'm very excited !
Mine is 2019. More recent models have a different exhaust to try and overcome the heat issue
great video, whats the MOT situation with decat?
Great job, giving me ideas for mine
Mmmmmmm, such a damn good lookin’ bike.
Thank you for the video. I really want to do it but bit scared doing it by myself. I think need to find a welding guy first then I can try.
Yes, chopping up the exhaust is a bit scary, but before I started, I told myself that if it all went wrong I'd just go and buy an aftermarket replacement. In the event, it was a very easy job, as you can see from the video.
@Songs From The Saddle Yes, I think so. I need to plan this soon. For now I need to put lowering sprung first. Tried twice but don't have right tools at the moment. Ordered new spanners.
i believe it is better for exhaust flow performance if you would have the x pipe installed in the box…exhaust gas scavenges better with the x pipe
As a few people have left a similar comment it is worth explaining why I did not insert a baffle plate into the exhaust. Firstly, an engine does not need back pressure to function efficiently. That is a misunderstanding. You just need to look at the exhausts on drag bikes and drag cars to see that. Secondly, the decated Scrambler exhaust does still have back pressure, due to the silencer baffles. The purpose of a baffle plate would be to tune that backpressure to use it positively. The back pressure creates a reverse pulse wave at the exhaust manifold that can increase pressure differential and thereby improve scavenging. However, as this is a dynamic system (pulse frequency changes with revs) the exhaust can only be tuned to benefit power at a certain rev range. Improved scavenging is the product of careful matching of inflow through the injectors, valve timing and overlap and exhaust tuning. This means that if I were to fit a baffle, the benefit, if any, would be unknown without testing and tuning on a Dyno. I assume that the manufacturers of replacement header pipes do this, but again the benefits of installing an aftermarket header with an X pipe are uncertain if you are not also improving the inflow and remapping the fuelling. The whole point of my video was a free and simple solution to the heat problem. It was not intended as a bid to increase power. Because I also fitted a high-flow air filter and removed the airbox snorkel, this has unquestionably increase the engine power. Any further modification, such as welding in a baffle plate is pointless without looking at all these other factors and testing on a Dyno.
The gutted baffle will act the same as an x-pipe.
Exelente video, que material aislante de calor usa para el recubrimiento de los protectores del escape?
Lo compré en eBay. Prueba a buscar "aislamiento térmico" o "aislamiento del compartimento del motor".
Hey there!
Have you also tried to put it factory made db killers?
Is it possible to just put them out by unscrewing them?
Thank you
I'm not trying to make the exhaust loud. I just wanted to overcome the heat issue.
Sensacional ficou bom
Mas o melhor é colocar um escape zard italiano a scrambler se transforma
Parabéns pele iniciativa continue postando mais vídeos. Sobre a moto
Tankyou
E melhor de eliminar a caixa enteira e substitu um tubo afixar com dois abracadores.
That’s whT I did with my street scrambler couple years ago. Cheapest option!
So it's a metal substrate? I remember reading a (Haynes or Bentley?) VW shop manual from back in the 1970s they recommended using a heavy prybar to smash out the ceramic substrate and shake it out. I think that was recommended if you were taking a Rabbit/Golf from the US to a country where only leaded gas was available. So you wouldn't clog the converter with lead oxides. In that case the substrate was ceramic, and it was brittle, so you could just break it apart and shake out the parts without cutting/welding the case.
It's metal
I added a Zard silencer to my 2022 bike and the 02 sensors packed up after a year with it on the bike! Do you think with the cat removed they went bad?
I don't we why. I've now done 14,000 miles since decat with no issues
Probably just a one off with some bad sensors.
Thanks for sharing very helpful. Did you have an issue with your engine light staying on after you completed the decat?
Not at all
@@SongsFromTheSaddle Interesting. Wonder if it is a Canadian dealership issue. The bike runs fine idles smoothly yet the check engine light stays on. Oh well another trip to the dealer! Thanks again for your detailed instructions and info on the Scrambler. What a bike!
@@carlbayard8729 I hope you get it sorted. It's probably just an error code if you removed the oxygen sensor. A reset should fix it. It might be worth getting a diagnostic tool. See my video on DealerTool. This is a UK based company, but I believe you can get something similar in the USA and Canada.
Hey ya, great video, I’m just about to do that to my street scrambler 900,2018 model, I already got Vance and Hines exhaust. I don’t want to bother you with any similar questions & if it is apologies, just want to know is there anything else I would need to do for bike apart from just what you did in video, as I read all comments and your response on no need to instal any baffles, but any adjustments I would need, any need for air intake filter change?
Would appreciate your suggestions, Thanks
I made this change to reduce the heat on my leg, not to improve performance. However, I did also fit a high-flow air filter. But again, that was for convenience rather than performance. I would suggest that it is worth doing and it is not expensive. I fitted a DNA air filter.
Excelent boy, thank you soo much..👍👍👍👍
Literally, de-cat you did 👍
Hi there I would like your thoughts, I now live in Finland and looking to buy a Triumph t140. The choice of Triumphs in Finland are few and far between and the prices are crazy, So I'm thinking of popping back to the UK to pick one up and riding it back, whats your thoughts? I will get a good one, but would it make it, I don't want to ship it thanks.
Evan easier than getting the baffle plate out of my T100.
Nice. I think I need to do this next. Do you feel the airbox change is mandatory with the removal of the CAT?
I removed the cat simply to overcome the heat problem, not to improve power. However, any power gains are unlikely to be great without also improving inflow. See my answer to other comments here about fitting a baffle in the exhaust
@@SongsFromTheSaddle thank you. :)
Thanks for this but what about passing an MOT ? Never noticed the heat on my 2021 euro 4 though. Lumpy low speed running is my dislike.
Triumph fixed the issue on the 2021 model by moving the cat to the rear section of the exhaust.
I wonder if it runs far to lean after decat. It can put a hole in the piston or cause damage round valves.
I am very interested to know what a mechanic thinks and how have owners found it runs after a decat.
The answer is no, and you can be assured of that by checking the plugs.
In the days of carbs, maybe this would have leaned the fuel air ratio so much that melted pistons would have been an issue. However with modern fuel injection, my understanding is the bikes ECU uses the O2 sensor to monitor the fuel /air ratio post combustion. It then adjusts the ratio at the injector accordingly. Therefore no worries about the bike running too lean.
Great video but you need some sort of baffle welding in to help with back pressure otherwise you'll loose some torque from the engine that's why aftermarket ones have a H pipe or X pipe
Hi Paul. As a few people have left a similar comment it is worth explaining why I did not insert a baffle plate into the exhaust. Firstly, an engine does not need back pressure to function efficiently. That is a misunderstanding. You just need to look at the exhausts on drag bikes and drag cars to see that. Secondly, the decated Scrambler exhaust does still have back pressure, due to the silencer baffles. The purpose of a baffle plate would be to tune that backpressure to use it positively. The back pressure creates a reverse pulse wave at the exhaust manifold that can increase pressure differential and thereby improve scavenging. However, as this is a dynamic system (pulse frequency changes with revs) the exhaust can only be tuned to benefit power at a certain rev range. Improved scavenging is the product of careful matching of inflow through the injectors, valve timing and overlap and exhaust tuning. This means that if I were to fit a baffle, the benefit, if any, would be unknown without testing and tuning on a Dyno. I assume that the manufacturers of replacement header pipes do this, but again the benefits of installing an aftermarket header with an X pipe are uncertain if you are not also improving the inflow and remapping the fuelling. The whole point of my video was a free and simple solution to the heat problem. It was not intended as a bid to increase power. Because I also fitted a high-flow air filter and removed the airbox snorkel, this has unquestionably increase the engine power. Any further modification, such as welding in a baffle plate is pointless without looking at all these other factors and testing on a Dyno.
@@SongsFromTheSaddle I hope you didn't think my comment was in anyway a criticism it's just most decat replacement pipes seem to have an H or X in them ,yet again another brilliant video unfortunately I haven't used a welder for years I learnt to use brazing rods as a teenager, I'm still trying to get a decent deal on a scrambler
Hi Paul. I'm not at all offended by your comments. You are entitled to disagree with me and to criticise my efforts. However I feel that without a baffle design that is tried and tested I would just be guessing, and could make the performance worse.
How much weight did removing the cat remove from the bike?
Not much.
Hi, can you tell me if this helped with the heat a great deal? I know in theory it should but you’ve had time to ride it, did it change the temperature on your leg significantly? I live in a hot climate and have been eyeing this bike for some time, but every video I’ve ever watched they mention the heat on the leg and say “oh boy in a hot climate this would be a nightmare” or something to that effect, so I’m really curious if this helped significantly. Thanks!
well looks like you answered my question about a minute later, I guess I should have finished the video before commenting.
Yes it does help, but there is still some heat there, inevitably - the exhaust is right next to your leg.
The 1200 engine kicks out a lot of heat. I melted my trousers while riding pillion on my mate's bike. We live in Denmark, and it happened about 2 months ago.
Is the cat stainless or titanium? I can’t weld titanium but if it’s stainless I’m gonna go for it! Thanks
@@scottkelley3263 I don’t think you need to weld anything, it slips right off. Depending on the year I guess, the 2022+ model years I believe it’s in the back, so a slip on exhaust decats your bike, the older model years I think you can buy an H pipe and that will decat your bike. If you don’t want to do either of those, you can cut it out, there’s a very simple video I seen of someone doing it. It’s stainless steel like the rest of the exhaust, you cut it open and pull the grey insert(cat) out and then MIG/TIG weld it back together. Looked really easy if you can do a simple weld, definitely will save you 300-400 bucks depending on the model year.
Would the Bike still pass its MOT in the UK after de-catting?
yes
Is this legal? I mean…could we have probelm with a police control?
Thanks great video!
I guess it depends on where you live
wow wow wow
Me encantan tus videos , para cuando subtitulos en español?
Gracias
Ese es un trabajo para RUclips. Puedo hablar en español si quieres, pero mi acento no es bueno!
Did your mate weld a baffle plate inside to seperate the gas flow from the headers ?
I am also curious on that as well. Everything I have heard is you need some type of baffle plate in there. If you didn't put a baffle plate, I am curious if you notice any loss in power throughout the entire power band ie low speed torque at lower RPM etc? Thanks for reporting back and this video. I love your videos and grateful for your honesty and genuine take.
See my reply above
As a few people have left a similar comment it is worth explaining why I did not insert a baffle plate into the exhaust. Firstly, an engine does not need back pressure to function efficiently. That is a misunderstanding. You just need to look at the exhausts on drag bikes and drag cars to see that. Secondly, the decated Scrambler exhaust does still have back pressure, due to the silencer baffles. The purpose of a baffle plate would be to tune that backpressure to use it positively. The back pressure creates a reverse pulse wave at the exhaust manifold that can increase pressure differential and thereby improve scavenging. However, as this is a dynamic system (pulse frequency changes with revs) the exhaust can only be tuned to benefit power at a certain rev range. Improved scavenging is the product of careful matching of inflow through the injectors, valve timing and overlap and exhaust tuning. This means that if I were to fit a baffle, the benefit, if any, would be unknown without testing and tuning on a Dyno. I assume that the manufacturers of replacement header pipes do this, but again the benefits of installing an aftermarket header with an X pipe are uncertain if you are not also improving the inflow and remapping the fuelling. The whole point of my video was a free and simple solution to the heat problem. It was not intended as a bid to increase power. Because I also fitted a high-flow air filter and removed the airbox snorkel, this has unquestionably increase the engine power. Any further modification, such as welding in a baffle plate is pointless without looking at all these other factors and testing on a Dyno.
@@SongsFromTheSaddle Great thank you for your detailed response and explanation. I am no where near as knowledgable as you hence why I asked the question. I just know what TecBikeParts mentioned in their de-cat video. Probably because they offered to weld plate in there for extra cost if you shipped it to them. It is great to know that not only did it reduce the heat but the added benefit was a little increase in power. I plan to do same as yours as any added power is bonus but not the main point of the de-cat as getting the heat lowered. Thanks again!
Concerning the MoT do you think it will show on the pollution?
No
A few mot garages are getting wise to de cat procedures as car enthusiasts increasingly get into modifying their exhausts. BE WARNED! If you are still under warranty you should avoid it at any rate.
Does the decat reduce heat for the passenger as well? Does it reduce heat down entire pipe?
Yes
Not necessarily, I melted part of the inside knee of my Haglofs on my mates bike.
@@allistairneil8968 yeah, I decided to go for the Ducati 1100 scrambler instead and I love it.
@@MikaelLewisify I love the smaller one, Ducatti scramblers are actual dirt bikes!
@@allistairneil8968 well, the 1100 isn’t really. But a cool bike nonetheless.
nice and BOBs your uncle awesome.
Did you need to make a remap of the engine?
I explain in the video
Dumb question what year is that bike?
2019. In later models Triumph moved the cat to the rear part of the exhaust.
How about when you come to mot, it will fail emissions test, unless they don’t check.
Just had a read on mot testing for motorbikes, no test on emissions, so no worries. You are correct older exhaust does fit newer bikes, I’ve fitted the arrow end can to my 21 bike, therefore an easy option for newer bikes to decat. Thanks for videos.
Not an issue (at the moment, anyway.)
Why the hell did Triumph design it this way? So stupid. It’s my favorite bike in the world, but after driving one, I don’t think I can get deal with the heat, especially for my passenger.
i have a 2022 it's in the muffler now
Dude, it's only free if you have a mate who'll weld it back together. Most owners will not do this as it probably voids warranty. Probably better to get a later model and buy an earlier end can swap. No cutting and welding then.
If you are into buying new bikes and worrying about warranties, then most of my videos are not for you. Different approach to motorcycling.
@@SongsFromTheSaddle I only bought one new motorcycle in my life... ...in 1991. Still riding it now!
Mixed feelings. Do the gains outweigh the increase in pollution? Things are getting grim as it is...
You are right - this is a moral minefield and you ask an important question. Perhaps I'll make some videos on this in the future.
Yep. I don't want to live downwind from you, you ol' fart🤢😆🤣😂
X-pipe is more suitable. Very i treating.
This could have been cut down to20 min instead of watching cutting a pipe.
If you are in a hurry: cut pipe, remove cat, weld up. Some people enjoy watching the process though.
If only you could fast forward on RUclips
What’s the rush? This is really interesting.
Erreur !!!
🤔
@@SongsFromTheSaddle Erreur !! puisque la lecture des sondes lambda est erronée voire nulle ,, faut arrêter de faire et de faire croire n'inporte quoi .. ✌