As stated previously, the higher NOx emissions you get from an EGR delete is due to higher combustion temperatures. Higher combustion temps result in the engine timing being retarded by the ECU/PCM which hurts performance, fuel economy and, ironically, the life of your engine. The EGR is NOT the main contributor to carbon buildup, it's the positive crankcase ventilation (PCV) system dumping oil and contaminants back into the intake. Install a baffled oil catch can to eliminate the majority of that buildup and you're golden. DO NOT delete your EGR unless you want worse performance, lower fuel economy and shorter engine life due to the higher combustion temperatures.
People need to realise that deleting the egr is only part of the whole process. The reason theres so much carbon build up is because the crankcase breather system is coating the intake with oil. The gasses from the egr then stick to the oil coating and then builds up the carbon deposits. The correct way is to delete the egr, then map it out of the software and install a catch can in the breather circuit. The catch can will not eliminate it completely but it will definitely help!
Thank you for saying this!! The only thing I disagree with is the EGR delete first. Catch cans are easy to install and cheap to buy. It is %100 more important and more cost effective. EGR delete requires tuning which equals money and down time. Catch can can be installed on any vehicle without tuning within an hour.
@@benndarayta9156sure, clean it however many recommended miles for your vehicle or if you suspect problems, but a catch can is something I’m going to do myself as I saw all that build up down in the intake of my car earlier today. It looks awful from all that shit, but rather clean for 290,000 miles lol
I am happy to find out some people know why the build up in these systems. Yes it is the oil wapor that make the intake walls sticky alowing thr egr to dump it full of soot. But nobody should delete and egr. It's a very robust and efficent way to decrease engine heat when we don't what it. The only con of am egr is the soot build uo that that is mainly the crankcase breather fault. And the amount of oil that a crankcase breathers puts in the intake can be minimized by a catch can. But catch cans can be a too restrictive thus increasing the preasure inside the engine. So i would recomend to make a small full time vent that can dump all the presure to the outside. This way you get a diesel car with the same performance and better low end fule economy. And longevity egr decreased the heet in the engine and on the exhaust side makin the components jsut slightly last longer.
I've got mine unplugged. If it's plugged in, the van runs like shite and makes a high pitched whistle in gear changes. I unplug it and it runs great, and she goes "choooo"
EGR system not only reduces NOx but it keeps engine cooler and thus ready to respond optimally when driver throttles. When full power is used, the EGR is closed. You have to learn basic functions and then come here and post video lectures mate. By the way your engine has serious issues you have to solve first after watching this carbon build up. EGR is not your problem!
@@khalidacosta7133more heat = less dense air = less power More heat = more knocking Knocking = less power ECU adjusts ignition timing to prevent knocking = less power More heat doesn't mean more power. A hot engine after 10 flat out laps on track will have less power on a dyno than just a barely warmed up engine. Otherwise we wouldn't want to run our engines as cool as we do. We purposely run snowmobile engines at 40 degrees celcius. We could run them hotter if we wanted but the performance would be worse. People with race cars struggle with heat because the performance of the engine drops when the heat rises. Engines don't work with heat, they produce heat when we want pressure in the cylinders
Carbon is aprrox 10nm oil filter filters 30nm and above. It does not harm your engine but the oil from the breather will mix and clog it. 😮. It only opens at low throttle so does not effect hp when clean.
Delete means deleting it from the entire car/truck the computer doesn’t think it’s there the motor doesn’t think it’s there you don’t think it’s there so it will run just fine without it has to be tuned out there for means deleted
@@Duramaximusif the car thinks EGR not there it will go to limp mode. You have to trick the ECU to think it is there and still program it to work like it's not there. The ECU doesn't even know what to do if it's not there, it's not programmed to work without EGR except full throttle when it's closed anyway
simply placing the EGR valve on solid plate to keep it always closed then if you need an inspection, remove the plate, inspect vehicle then put it back.
My state does not have emission testing. I have an EGR error code, but it will not come off, bolts frozen. 2006 Town and Country. I will give this a try. I will cut it off with a sawzall.
I just bought a new one because the code came up for me! It’s just going to be a pain because my car has a place for Bolts on the bottom of the egr valve and it’s already slammed against the top under the hood where it’s hard to get to but I’ll figure it out
To clean egr valve is makeing worse proplem clog the dpf not letting system is work properly and dpf is not regenerating by self its couse big big proplem for future
@@Mr330d I know, I am not disagreeing with you. I'm saying that even if it doesn't have a DPF it does have a Cat, which it is another thing that can be clogged right?
@@five-star-media How often do you hear of cats getting clogged the same as DPFs . Usually on petrol cars the cat can give trouble I’ve never heard of anyone replacing the cat on a diesel unless for sound/performance . Lol me personally I delete everything
EGR redirects CO2 to intake to displace oxygen to lower combustion temps; only under low manifold pressure conditions. It makes your engine last longer; use a catch can to reduce sludge.
Don’t even need to remove it. Just buy a £9 EGR/ DPF additive every service and I’ve not had an issue in 147,000miles. 9 x 14 ~ £137 damn sight cheaper then Labour. Coding. Transport. Higher insurance. Higher taxes….
It isnt…. Leave it on it actually helps engine cool evenly and last longer. Carbon buildup is easily cleaned out the engine without disassembly…. The amount of power gained by delete, just like most catalytic converter deletes is negligible.
That's where you'd be wrong. A proper delete also includes a retuning, should gain nearly 10%. DPF delete is more like changing out exhaust headers and straight piping on a gas engine, only bigger gains, Drops exhaust valve back pressure like a mofo, less energy consumed forcing out all that exhaust gas through the DPF. It's like trying to run a marathon with a respiratory on, while trying to set a world record, with a DPF filter.
@@TheGalifrey as long as it's working properly 💁♂️🤣 and hasn't fkd the seal up and leaks sooty air as a result.... which is what they all do on diesels after so long, because EGR on a diesel is fkn fktarded
@@mes2500 I stand corrected it does indeed lower peak combustion chambers by having less oxygen but surely less fuel would do the same? Not sure if your claims amount to performance or longevity losses though still trying to find that information
So the inert gas cools the cylinder and this engine is fueled for this cooling gas. You can distroy the engine and cause high emissions and both MOT and insurance are no longer valid
Interesting thing! Can you compare average fuel consumption for one whole year with EGR ON and compare it with the next year with EGR OFF please? Some diesel vehicles can experience adverse effects like reduced horsepower, increased exhaust gas temperature and engine knocking. In some cases, it can be more beneficial to have an EGR valve replaced, rather than bypassed.
That may happen on the newer diesel engines and as such, a soft modification (if the ECU accepts it) may be required to make the engine run properly without the EGR. As a general note which may be inaccurate in some cases, on cars that are EURO 4 or older, you can easily remove the EGR without side effects or doing anything else, while on cars that are EURO 5 or newer, there is a high chance to appear some complications or additional requirements to get it to run properly
The EGR is actually bad for your car. It puts unnecessary sootand oil deposits and abrasives in your engine. It's actually a conspiracy to go electric. It does harm to your vehicle. People don't realize that they think they're mechanic told them to get one. So they better do what the mechanic says e.G.R valves are bad for your car.It's just another global warming tactic
Good thought experiment. Question: would not on EGR increase compression pressure at lower loads without affecting stoichiometric ratio? Higher compression at lower loads make for higher efficiency. Also, why can not the EGR be bypassed for crankcase fume combustion?
@@hughoneill6555 absolutely, it isn’t a problem unless it causes significantly worse emissions (which it wont) also if you get it mapped out (removed electronically) then it will still be there visually.
@@Heha654 i have just bought an astra with a metal plate blocking the egr off, and it is showing an emissions code and is failing the mot. Any idea how to fix it?
@@hughoneill6555 well just blanking it off with a plate isn’t the best option, as the car still thinks it has an egr, so you will have to get a remapper to remove the egr software
It's astonishing how many people don't understand EGR design and functionality. The higher* NOx you get from an EGR delete is due to higher combustion temperatures. Higher temps result in the timing being retarded hurting performance, fuel economy and, ironically, the life of your engine. EGR also isn't even the main contributor to carbon buildup, that would be your positive crankcase ventilation (PCV) system. Install a baffled oil catch can to eliminate the majority of that buildup and you're golden. DO NOT delete your EGR unless you want worse performance and fuel economy. 📄
NEVER delete your EGR unless you want to overpressurise the crankcase and have engine oil leak through the gaskets overtime. Install an oil catch can instead, for £50.
Because itll also euthanize the athmospehere, recycled gases will do alot more to the air than they will your cylinder or valves which are made to move extreme pressures, egr delete wont do much for the lifespan of your engine, but it may get rid of maintenance items and give you a louder exhaust if you remove the cat too
exactly, I'm amazed at the stupidity of the reasoning here.. if this stuff is dirty and bad, hell just vent it into the world, not my problem.. something like that, i guess
I just had my check engine light come on the other day and ran the code and got a new EGR valve because that was what it said the problem was, but after seeing this and all these comments, I’m not quite sure if it’s better to just unplug the damn thing💀
In a naturally aspirated engine, wouldn't an EGR type system increase low load compression, while maintaining the stoichiometric ratio? Would a compression increase not be good for fuel efficiency at lower loads?
Ye you dnt want that in your engine so wer does it go magically disappear when you egr delete wot a load of rubbish m8 these dumb -0.0hp gain mods do nuffin but mess up da vehicle they have not put millions into it and not thought of everything u have plus a million other things..... next you will say putting decals on your car creates downforce with wind touching em and makes u gain 10hp looool
@@davidmoreno5228 Then again, EGR mostly eliminates nitrous oxides by lowering combustion temperatures at low or partial loads. Those oxides turn into nitric acid when they meet water. Not very good for the environment or lungs...
@@PureLeeful Great cars 👍🏻 Mine went into the repairer yesterday following the hit up the back of it a couple of months ago. Waiting to find out whether it’s being repaired or written off!
They want to save the planet by making you buy a new engine every 200k+
80k**
@@ethanwild3301400.000 with EGR and DPF 😊
@@ethanwild3301😂😂😂
Planet is already screwd anyway
As stated previously, the higher NOx emissions you get from an EGR delete is due to higher combustion temperatures. Higher combustion temps result in the engine timing being retarded by the ECU/PCM which hurts performance, fuel economy and, ironically, the life of your engine.
The EGR is NOT the main contributor to carbon buildup, it's the positive crankcase ventilation (PCV) system dumping oil and contaminants back into the intake. Install a baffled oil catch can to eliminate the majority of that buildup and you're golden. DO NOT delete your EGR unless you want worse performance, lower fuel economy and shorter engine life due to the higher combustion temperatures.
People need to realise that deleting the egr is only part of the whole process. The reason theres so much carbon build up is because the crankcase breather system is coating the intake with oil. The gasses from the egr then stick to the oil coating and then builds up the carbon deposits. The correct way is to delete the egr, then map it out of the software and install a catch can in the breather circuit. The catch can will not eliminate it completely but it will definitely help!
Thank you for saying this!! The only thing I disagree with is the EGR delete first. Catch cans are easy to install and cheap to buy. It is %100 more important and more cost effective. EGR delete requires tuning which equals money and down time. Catch can can be installed on any vehicle without tuning within an hour.
Yeh just deleting it without a tune will make the engine run too hot ??
@@Wrenchking555 isn't it better to just clean EGR regularly?
@@benndarayta9156sure, clean it however many recommended miles for your vehicle or if you suspect problems, but a catch can is something I’m going to do myself as I saw all that build up down in the intake of my car earlier today. It looks awful from all that shit, but rather clean for 290,000 miles lol
I am happy to find out some people know why the build up in these systems.
Yes it is the oil wapor that make the intake walls sticky alowing thr egr to dump it full of soot.
But nobody should delete and egr.
It's a very robust and efficent way to decrease engine heat when we don't what it.
The only con of am egr is the soot build uo that that is mainly the crankcase breather fault.
And the amount of oil that a crankcase breathers puts in the intake can be minimized by a catch can.
But catch cans can be a too restrictive thus increasing the preasure inside the engine.
So i would recomend to make a small full time vent that can dump all the presure to the outside.
This way you get a diesel car with the same performance and better low end fule economy.
And longevity egr decreased the heet in the engine and on the exhaust side makin the components jsut slightly last longer.
I've got mine unplugged. If it's plugged in, the van runs like shite and makes a high pitched whistle in gear changes. I unplug it and it runs great, and she goes "choooo"
Just fix it and you are good
@@liambyrne591it is fixed it goes chooo
Im keeping it to reduce pumping losses and installed an air-oil separator in series with an oil catch can to prevent sludge from gunking up the intake
EGR system not only reduces NOx but it keeps engine cooler and thus ready to respond optimally when driver throttles. When full power is used, the EGR is closed. You have to learn basic functions and then come here and post video lectures mate. By the way your engine has serious issues you have to solve first after watching this carbon build up. EGR is not your problem!
lol
@@BAll-n7w lmao
EGR reduces combustion temperature by reducing oxygen content. Engines work on heat. Higher heat = more power / response.
@@khalidacosta7133more heat = less dense air = less power
More heat = more knocking
Knocking = less power
ECU adjusts ignition timing to prevent knocking = less power
More heat doesn't mean more power. A hot engine after 10 flat out laps on track will have less power on a dyno than just a barely warmed up engine. Otherwise we wouldn't want to run our engines as cool as we do. We purposely run snowmobile engines at 40 degrees celcius. We could run them hotter if we wanted but the performance would be worse. People with race cars struggle with heat because the performance of the engine drops when the heat rises. Engines don't work with heat, they produce heat when we want pressure in the cylinders
Yes you are 100% right but these "experts" think a EGR delete will make their car better says a lot
Carbon is aprrox 10nm oil filter filters 30nm and above. It does not harm your engine but the oil from the breather will mix and clog it. 😮. It only opens at low throttle so does not effect hp when clean.
More context is needed since just blocking off or deleting that valve won't make the system perform correctly and your car will run worse.
Delete means deleting it from the entire car/truck the computer doesn’t think it’s there the motor doesn’t think it’s there you don’t think it’s there so it will run just fine without it has to be tuned out there for means deleted
Not all cars, depends how electronic they are
Reprogram ecu
@@Duramaximusif the car thinks EGR not there it will go to limp mode. You have to trick the ECU to think it is there and still program it to work like it's not there. The ECU doesn't even know what to do if it's not there, it's not programmed to work without EGR except full throttle when it's closed anyway
Similar to the TGV delete on the Scoobys….well worth doing
simply placing the EGR valve on solid plate to keep it always closed then if you need an inspection, remove the plate, inspect vehicle then put it back.
This is the first thing what I gonna do tomorrow after my car has passed the MOT today.....
My state does not have emission testing. I have an EGR error code, but it will not come off, bolts frozen. 2006 Town and Country. I will give this a try. I will cut it off with a sawzall.
How’d that work out?
I just bought a new one because the code came up for me! It’s just going to be a pain because my car has a place for
Bolts on the bottom of the egr valve and it’s already slammed against the top under the hood where it’s hard to get to but I’ll figure it out
To clean egr valve is makeing worse proplem clog the dpf not letting system is work properly and dpf is not regenerating by self its couse big big proplem for future
It doesn’t have a DPF
@@Mr330dit has a Cat though
@@five-star-media but as your eyes will show he said it would clog the DPF
@@Mr330d I know, I am not disagreeing with you. I'm saying that even if it doesn't have a DPF it does have a Cat, which it is another thing that can be clogged right?
@@five-star-media How often do you hear of cats getting clogged the same as DPFs . Usually on petrol cars the cat can give trouble I’ve never heard of anyone replacing the cat on a diesel unless for sound/performance . Lol me personally I delete everything
"All this carbon build up" - that's a pretty clean one 😂
You can also blank it
EGR redirects CO2 to intake to displace oxygen to lower combustion temps; only under low manifold pressure conditions. It makes your engine last longer; use a catch can to reduce sludge.
It also improves fuel economy.
Bruh just clean it. Egr code comes up. Remove and clean and check vacuum. Good as new.
Don’t even need to remove it. Just buy a £9 EGR/ DPF additive every service and I’ve not had an issue in 147,000miles.
9 x 14 ~ £137 damn sight cheaper then Labour. Coding. Transport. Higher insurance. Higher taxes….
It isnt…. Leave it on it actually helps engine cool evenly and last longer. Carbon buildup is easily cleaned out the engine without disassembly…. The amount of power gained by delete, just like most catalytic converter deletes is negligible.
That's where you'd be wrong.
A proper delete also includes a retuning, should gain nearly 10%.
DPF delete is more like changing out exhaust headers and straight piping on a gas engine, only bigger gains, Drops exhaust valve back pressure like a mofo, less energy consumed forcing out all that exhaust gas through the DPF.
It's like trying to run a marathon with a respiratory on, while trying to set a world record, with a DPF filter.
You gain no power from deleting EGR, since it's only active at part throttle.
Deleting EGR also reduces your fuel economy.
@@patrickw9520 A retune WITH the EGR intact will yield exactly the same, it's only open at low revs and has zero impact on power.
@@TheGalifrey as long as it's working properly 💁♂️🤣 and hasn't fkd the seal up and leaks sooty air as a result.... which is what they all do on diesels after so long, because EGR on a diesel is fkn fktarded
@@patrickw9520 If you like inhaling NOx and it turning to Nitric Acid in your lungs then you could be right .....
even tho its a pain its needed. helps cool engine and keeps the nox down
The EGR actually increases intake temp thus lowing the nox levels
I wonder how hot the outside temperature would have to be for your exhaust gas to make your car run cooler 😅
EGR lowers combustion chamber temps by reducing the amount of oxygen. It definitely does not run hotter.
@@mes2500 I stand corrected it does indeed lower peak combustion chambers by having less oxygen but surely less fuel would do the same?
Not sure if your claims amount to performance or longevity losses though still trying to find that information
@@FastandFunit reduces oxygen, lowering nox
so just cleaning doesnt solve the problem?
All that crud in a petrol engine?
So the inert gas cools the cylinder and this engine is fueled for this cooling gas. You can distroy the engine and cause high emissions and both MOT and insurance are no longer valid
Interesting thing! Can you compare average fuel consumption for one whole year with EGR ON and compare it with the next year with EGR OFF please? Some diesel vehicles can experience adverse effects like reduced horsepower, increased exhaust gas temperature and engine knocking. In some cases, it can be more beneficial to have an EGR valve replaced, rather than bypassed.
wrong,there is no EGR benefit other than to comply with euro standards
That may happen on the newer diesel engines and as such, a soft modification (if the ECU accepts it) may be required to make the engine run properly without the EGR.
As a general note which may be inaccurate in some cases, on cars that are EURO 4 or older, you can easily remove the EGR without side effects or doing anything else, while on cars that are EURO 5 or newer, there is a high chance to appear some complications or additional requirements to get it to run properly
The EGR is actually bad for your car. It puts unnecessary sootand oil deposits and abrasives in your engine. It's actually a conspiracy to go electric. It does harm to your vehicle. People don't realize that they think they're mechanic told them to get one. So they better do what the mechanic says e.G.R valves are bad for your car.It's just another global warming tactic
Good thought experiment. Question: would not on EGR increase compression pressure at lower loads without affecting stoichiometric ratio? Higher compression at lower loads make for higher efficiency.
Also, why can not the EGR be bypassed for crankcase fume combustion?
It cools down things
i wanna do it myself but dont know how and cant find a video on it i got a 2.0 tdi
You can just get it removed electronically (program it to not open) and not actually have to physically remove it
@@Heha654will it pass mot
@@hughoneill6555 absolutely, it isn’t a problem unless it causes significantly worse emissions (which it wont) also if you get it mapped out (removed electronically) then it will still be there visually.
@@Heha654 i have just bought an astra with a metal plate blocking the egr off, and it is showing an emissions code and is failing the mot. Any idea how to fix it?
@@hughoneill6555 well just blanking it off with a plate isn’t the best option, as the car still thinks it has an egr, so you will have to get a remapper to remove the egr software
Are you a mechanic/engineer or user?????
I bought a car that has a plate blocking it off. But it failed mot on emmisons any thoughts hoe do you delete it properly?
Remap that baby should be fine
@@kikoclva4570 Remap won't reduce your NOx
It's astonishing how many people don't understand EGR design and functionality. The higher* NOx you get from an EGR delete is due to higher combustion temperatures. Higher temps result in the timing being retarded hurting performance, fuel economy and, ironically, the life of your engine. EGR also isn't even the main contributor to carbon buildup, that would be your positive crankcase ventilation (PCV) system. Install a baffled oil catch can to eliminate the majority of that buildup and you're golden. DO NOT delete your EGR unless you want worse performance and fuel economy. 📄
Which they usually hide by having a remap and further reducing engine life....
Humans should have Egr Systems too! We should have a tube that redirects farts back to our nose, then you'll know how an engine feels with egr....
Wet farts 🤣
Can you delete it without blanking it?
You can just unplug it to blank it
EGR improves fuel economy on a petrol engine though.
NEVER delete your EGR unless you want to overpressurise the crankcase and have engine oil leak through the gaskets overtime. Install an oil catch can instead, for £50.
Tell me you don't understand engines
Will it fail a MOT with a EGR delete? Or is down to the MOT testers discretion.
It’s a grey area - it’s not illegal to remove the EGR but would fail the MOT if the car fails to pass the emissions test.
if u see how mot tests are done basically they rev upp the engine and by this time egr Valve it's closed anyway
In many countries it is illegal to remove or modify EGR, DPF, PCV or other emissions systems and fines can be several $10000
EGR- Euthanizing gas redirection
Because it'll euthanize your engine
Because itll also euthanize the athmospehere, recycled gases will do alot more to the air than they will your cylinder or valves which are made to move extreme pressures, egr delete wont do much for the lifespan of your engine, but it may get rid of maintenance items and give you a louder exhaust if you remove the cat too
@@KwajGN125 EGR gives you loads of problems in a diesel though, and will eventually hurt the engine from carbon build up.
will egr delete improve HP?
Yes but only marginally. The biggest benefit is to prevent carbon build up in the engine due to the EGR using the return of exhaust gases.
No I want all that carbon build up in my lungs! 😂
exactly, I'm amazed at the stupidity of the reasoning here.. if this stuff is dirty and bad, hell just vent it into the world, not my problem.. something like that, i guess
Yeah but just do a DELETE will make your car running poor. Because you must tune the ecu
I just had my check engine light come on the other day and ran the code and got a new EGR valve because that was what it said the problem was, but after seeing this and all these comments, I’m not quite sure if it’s better to just unplug the damn thing💀
No it's a dumb idea to remove it, do your proper research why it's necessary to have egr.
no necesito el EGR
In a naturally aspirated engine, wouldn't an EGR type system increase low load compression, while maintaining the stoichiometric ratio? Would a compression increase not be good for fuel efficiency at lower loads?
No need to egr delete thats for uneducated people get a custom tune & a catch can.
Correct!
i dont want a runaway also
Wouldn't recommend that to German viewers 😂
Ye you dnt want that in your engine so wer does it go magically disappear when you egr delete wot a load of rubbish m8 these dumb -0.0hp gain mods do nuffin but mess up da vehicle they have not put millions into it and not thought of everything u have plus a million other things..... next you will say putting decals on your car creates downforce with wind touching em and makes u gain 10hp looool
Womp womp
why u talking like that lad
Yeah i want all that carbon in passers bys lungs all right
With all the crap in the air, carbon is the least of your worries 😅😅
@@davidmoreno5228 Then again, EGR mostly eliminates nitrous oxides by lowering combustion temperatures at low or partial loads. Those oxides turn into nitric acid when they meet water. Not very good for the environment or lungs...
Unlawful mod.. rest in cell brother
Go get your booster 😂
@@ln5747 i. Did. Did not get myself to use it though.. yet
I don't like you and invest a oil catch can!!!
Never mind buddy - thanks for commenting anyway 👍🏻
Straight into the atmosphere then! 😮
The EGR valve doesn’t stop it going into the atmosphere!
@@FastandFun My bad, must be the DPF deletes that choke me when cycling! 😆
Picking up a Meg on Sat, missed it too much! 😉
@@PureLeeful Which one?
@@FastandFun 275 Cup-S, same as before! 😊
@@PureLeeful Great cars 👍🏻 Mine went into the repairer yesterday following the hit up the back of it a couple of months ago. Waiting to find out whether it’s being repaired or written off!
that EGR is designed to destroy your engine with time..
All government owned cars have no dpf or egr.. let that sink in
Yea the government trucks dont come with egr