The anti lag system, changes the ignition timing that split second you let off of the gas. It ignites the fuel in the exhaust which forces the exhaust turbine on the turbo to maintain it's speed.
So basically ignition timing is delayed when you release your foot off the gas pedal, so explosions are occurring in the exhaust pipe, and these explosions help boost power to the turbine of the turbo, and this way even when you let go of the gas you're still increasing power by letting the turbo take in more air?
@@asjadsiddiqui7409 almost completely correct; it won't increase power because the throttle plate is closed with your foot off the gas, but it prevents the turbo from slowing down, so after you put the pedal down again the turbo is still spinning at high rpm and you instantly have boost again without having to wait for it to spool up
I love how your smile goes away as soon as you get to business. Your videos are so simply explained that I feel like I never go a video without learning something. Keep it up!
I've been around this stuff all my life and I definitely learned something. Excellent video. Astounding amount of content condensed to under four minutes. You're a born teacher.
I think the amount of thrust you'll see will be quite minimal haha. But on NHRA dragsters the exhaust produces a considerable amount of downforce (pipes are tilted up), something like 800 lbs or so I believe.
That's designed to happen. Mini exhaust systems are designed to 'burble' which is just very minor afterfire occurring when you lift off the throttle. I think it sounds awesome personally.
+Jacob Squire Hmm. He may have MEANT air/fuel, but it does work either way. The condition is most pronounced with extremes of air-fuel mixture, so the air/fuel mixture being "rich af" or "lean af" is a quite accurate description. Fascinating.
Yes, this is overlapping of the valves. Of course, it is possible for some fuel to leak to the exhaust, assuming it is not a direct injection engine which waits to spray the fuel until the exhaust valve has closed.
This boy is always giving clear explanations. This means that he has understood well the material he presents. I often learn new things from him, or get the necessary confirmation of things I have thought - something always self assuring and comforting. Good job kid!
You are so smart it's almost painful to watch. This stuff is so easy for you to understand you stumble over your words explaining it. Hahaha thank you so much for making this video.
I know no everybody like every video in youtube but the reason why i subscribed to this channel is because how profesional and easy this dude explains everything how do some people can dislike this? Good job dude you are a talented one
The internals of the engine would probably be fine with rich A/F; with lean, the engine can get a bit too hot since the burn is longer. But I don't think either are really too ideal.
1. From a stop, maybe not. You may have to burn the clutch a bit more. It's not going to ruin your car or anything, just might wear the clutch faster. I start in second frequently if I'm stopped on a downward slope. 2. Sure. 5th to 3rd is probably more common for me than 5th to 4th.
i'm 13 and i'm into cars and how they work and i saw one of your videos and they are really cool im learning so much from this thanks keep up the good work
Interesting explanation on the back/after-fire in cars. I've heard a few high performance and race engines after-fire when starting. It usually happens just before the engine turns over, and the starter cranking sounds really slow. I always wondered what caused that, but now I'm guessing it's a combination of high compression and a rich mixture, but I could be wrong. Is this the case? I've seen a few videos of musclecars that do it and some race cars (NASCAR style?) that do it.
The throttle closes, preventing air from coming in, but the injectors still inject a certain amount of fuel in the cylinders for a couple revs. This extra fuel doesn't have air to burn with, so it burns on it's way out the exhaust when it comes into contact with oxygen. My apologies, I was assuming you already knew do to some other comments you made on another video - though I may be mistaking you for someone else.
you should be a teacher... I've watched multiple videos of yours and I learn more from you than I do from my automotive teacher... What am I paying him for!!! KEEP UP THE GOOD WORK!!!
The exhaust manifold gets hot from exhaust gas, hence, the exhaust gas is the heat source. If there is any fuel in the exhaust, and the temperature is hot enough, it can combust simply with the presence of oxygen.
maybe you could make a video about where deceleration pops come from? my 2012 camaro SS does this a lot, and there are lots of different opinions of where that actually comes from and what happens in the exhaust.
I have plenty to learn; what I have learned I've learned mostly on my own. I'm a graduated mechanical engineer; you can read more about me on my website (see description) on the about me page.
On motorcycles, the main cause of (internal) exhaust ignition is a badly seated (leaking) head to header seal. Fresh air gets drawn into that leak and any unburnt fuel mixes with that and causes a very lean air/fuel ratio which is ignited by the next exhaust stroke. This typically happens on over-run, on highly stressed engines.
Hey dude, your videos are great and really usefull, i'm not sure that you are in to, but it'll be awesome if you make a video about carburetor picking!!.
I would check the electrical system first for misfiring. Plugs, wires, etc.. Could very easily be a bad spark plug. I'm pretty inexperienced in auto-repair though.
my car had 2 spark plugs almost ready to spin out and 3 vacume leaks+i fixed those. i think a mechanic did it. ripped me off $300. my car is running good now. i avoid retarded mechanics in this area+rediculas!!!
Very clear explanation! But there is one thing that keeps puzzling me. On the newer models of Porsches (9x1 onwards) with 'sport exhaust' fitted, the sound they produced are mesmerizing. They sound just like after-fire (banging and cracking noise). May i ask how are these sound produced given the fact that backfiring may not be the answer to these new cars with modern combustion technology. Thanks. I am a big fan of your channel btw :)
on the turbo 3.0 liters it's programmed into the engine management system as a 'Turbo Anti-lag' feature. Some continued ignition in the exhaust system helps to keep the turbo's Turbine Impeller, which is situated in the engine's exhaust stream, spinning faster. This way, when you reopen the the throttle the turbo is spinning at a much higher rpm and ready to drive the Turbo's Compressor or Intake Turbine more effectively.
Normally the afterfire occurs after a hard acceleration or period of high engine demand. On performance cars, there can be a lag in the reset of the AF mixture so it tends to be a bit rich. He covered what happens when a hot rich air mixture comes in contact with oxygen. There's a lot of factors involved to get that little crackle in the exhaust we all love.
Normally pretty simple, you're over revving your valve springs to the point they dont close fully by the time the came rotates back round to open it again, and bounce is a spring I believe too soft which cant keep it shut so when it does close the force of it closing causes it to 'bounce' open again.
Your vids are great. You are a very good teacher. Now, suppose I actually wanted a little aftercare on off- throttle deceleration. The loud gurgling and burbling sound. What would be the best way to tune the aftermarket ECU to achieve this? I just think it sounds cool! I had a S2000 that did this, but I don't know how it was tuned to achieve it. I'm building another one, this one supercharged, so what would you suggest? (Interestingly, some manufactures are building this into their street cars such as the Fiat 500 Arbath).
Although you think that the engine isn't getting any fuel or air when you completely take your foot of the accelerator, the engine management software still adds some fuel, and leaves open the throttle body a little bit even though you think the throttle was closed completely. Then the engine management system also retards (slows in time) the ignition so it occurs in such a way that ignition hasn't been fully completed before the exhaust valve is opened (more or less). This way on a closed throttle there is some amount of unburnt air/fuel mixture that ignites within the exhaust manifold to help keep the Turbo's Exhaust Impeller Spinning at a higher RPM - hence less lag when you go back onto the throttle - pretty slick, right ?
im a big car enthusiast since i was kid and i love your videos man!keep it up!one question though: so supercars e.g. Lamborghini aventador that we see in videos afterfiring whats the reason behind that?are they runninh rich f/a mix??
@Engineering Explained - Can you please make a 'Part - 3' video explaining how 'afterfire' happens when the throttle is closed and the engine rpm is dropping on a carbureted engine? Resulting in exhaust pops, crackles and sometimes flames. Some say it is a small amount of unburnt fuel entering the exhaust and igniting due to heat. But I'd still like a video explanation of it please :P P.s I love your videos :D very well explained.
+mnsoans I have a carbureted fully stock Apache 160cc motorcycle with a catalytic converter which gives pops and crackles when the engine's RPM drops after rolling off the throttle. Hence the request :P +Engineering Explained
Outside of wasting fuel, is there any detremental effect to running rich over time? I know I was for a little while before I got my large O2 sensor fixed. Thanks!
Would anyone know what would cause a single backfire/afterfire during WOT? It sounds like a really loud bang, a big tire blow out, or maybe a gun going off.
Engineering Explained, I have a question I have wondered for years now. I know many cars and more commonly motorcycles, use secondary air injection to reduce exhaust emissions witch can cause popping on deceleration. But, on fuel injected engines, wouldn't deceleration fuel cutoff (DFCO) prevent ANY unburned fuel from being in the exhaust in the first place? My 1999 mustang v6 automatic always lightly popped out the exhaust when decelerating, how is this happening if the fuel is supposed to be cut off on deceleration?
Jason, “Engineering Explained”… I have another explanation for the "Lean Mixture After-Fire", and though this is from real world wide band O2 data logging, while tuning on Motorcycles and ATVs (a 4-Stroke combustion engine is pretty universal): I have noticed that when the engine is up to operating temp, and tuned properly “for performance”, the engine especially when you roll off the throttle or close the throttle plates at higher than idle RPM, the mixture goes so far on the lean side of stoichiometric, that the spark plug doesn’t ignite it and when you have 2-3-4 “Cycles” that get dumped into the head-pipe it now has enough fuel (and oxygen because it didn’t get burnt/ignited in cylinder, PLUS many of these engines have secondary air injection systems) that it hits the hot carbon now ignites the fuel/air mixture sending out the well-known BANG-POP-CACKLE we are so familiar with, most commonly with low restriction exhaust systems. (DFCO “Deceleration Fuel Cut Off” on EFI equipped cars and some bikes is mostly for economy, as in the performance world, drivability trumps fuel economy, and almost eliminates this, they will however, sometimes “pop” in the DFCO transition period.)
I had a vacuum hose come loose in an 89 Eagle Premier. When I tried to shut off the engine, it backfired so violently that it blew my muffler apart. The back of the muffler blew off and the case split open at the weld. Scared the crap out of me and everyone else at the gas station. I had taken off the plastic engine cover while I was working on something and I didn't realize that the engine cover was the only thing holding the worn out vacuum lines in place. Once I reattached the lines and put the cover back on, I never had another problem. Except for the extremely loud exhaust of course
The anti lag system, changes the ignition timing that split second you let off of the gas. It ignites the fuel in the exhaust which forces the exhaust turbine on the turbo to maintain it's speed.
So basically ignition timing is delayed when you release your foot off the gas pedal, so explosions are occurring in the exhaust pipe, and these explosions help boost power to the turbine of the turbo, and this way even when you let go of the gas you're still increasing power by letting the turbo take in more air?
@@asjadsiddiqui7409 almost completely correct; it won't increase power because the throttle plate is closed with your foot off the gas, but it prevents the turbo from slowing down, so after you put the pedal down again the turbo is still spinning at high rpm and you instantly have boost again without having to wait for it to spool up
@@ironduke6100 Ohhh thanks mate, that makes more sense.
I love how your smile goes away as soon as you get to business. Your videos are so simply explained that I feel like I never go a video without learning something. Keep it up!
dude is just there for the cash, he hates it there XD
I can't unsee lean af mixture... damn you internet :|
Dominik B lmao
Dominik B thats what i just commented like seconds ago 👌
i cant tell if he's 19 or 30
Haukenslush Those are the only two options.
+Haukenslush He is 19 with the knowledge of 30.
+George Badass 30 men
+Todds Boot-E Well it doesn't matter how old he is, I've learned so much from him, thank you +Engineering Explained!!
He's both
he looks like a smart justin bieber
I've been around this stuff all my life and I definitely learned something.
Excellent video.
Astounding amount of content condensed to under four minutes.
You're a born teacher.
Thank you!
hi
Piskotek hey
@@Marcel204_ What's up?
Adrian G. Oh hi mark
@@mantis_toboggan_md Oh hi Mark
I think the amount of thrust you'll see will be quite minimal haha. But on NHRA dragsters the exhaust produces a considerable amount of downforce (pipes are tilted up), something like 800 lbs or so I believe.
That's designed to happen. Mini exhaust systems are designed to 'burble' which is just very minor afterfire occurring when you lift off the throttle. I think it sounds awesome personally.
Anyone else think he wrote "Rich as F**k" and "Lean as F**k" ?
I did too 😁😁😁
I think he meant air/fuel
+Jacob Squire LOL
+Jacob Squire No I'm too much of a petrolhead so my first though was 'Air/Fuel' instead of 'As F*ck'
+Jacob Squire
Hmm.
He may have MEANT air/fuel, but it does work either way.
The condition is most pronounced with extremes of air-fuel mixture, so the air/fuel mixture being "rich af" or "lean af" is a quite accurate description.
Fascinating.
Man, going back and watching this and looking at you now. You've come a long way bro. Great job.
Yes, this is overlapping of the valves. Of course, it is possible for some fuel to leak to the exhaust, assuming it is not a direct injection engine which waits to spray the fuel until the exhaust valve has closed.
rich af😂😂😂
Awww, a child.
Jon Moore awww, nobody cares.
Awww ... damm
@@vincentbittel4860 Based "nobody cares" poster.
This boy is always giving clear explanations. This means that he has understood well the material he presents. I often learn new things from him, or get the necessary confirmation of things I have thought - something always self assuring and comforting. Good job kid!
Thanks for watching!
You are awesome. I have a bad backfire on my 89 460 efi. Its rebuilt, so knowing this makes my life so much easier understanding how it works.
Omg you still do videos and explain everything the same way since 8 years before ,it's just perfect
You are so smart it's almost painful to watch. This stuff is so easy for you to understand you stumble over your words explaining it. Hahaha thank you so much for making this video.
Thank you, spread the word my friend! :)
been watching a few of your videos now, good stuff keept it up !
I know no everybody like every video in youtube but the reason why i subscribed to this channel is because how profesional and easy this dude explains everything how do some people can dislike this? Good job dude you are a talented one
love your videos, very clear, very descriptive and professional KEEP IT UP MAN!!!!!!
The internals of the engine would probably be fine with rich A/F; with lean, the engine can get a bit too hot since the burn is longer. But I don't think either are really too ideal.
thanks for all the videos i've learned lots from you. keep em coming
👍. Well done on your channel. It has grown a lot over the years.
Your videos are awesome . Keep up the good work !
This was a neat video I found out what i was looking for, nice job!
You deserve more views, great clear explanation.
1. From a stop, maybe not. You may have to burn the clutch a bit more. It's not going to ruin your car or anything, just might wear the clutch faster. I start in second frequently if I'm stopped on a downward slope.
2. Sure. 5th to 3rd is probably more common for me than 5th to 4th.
I love your videos man keep the amazing work i hope to become a mechanical engineer or mechanic one day
@engineeringexplained thanks this is a great video :)
Oh my gosh a video from 8 years ago! This is pretty cool to see actually 😁
can't stop watching ur vids. im addicted. good work
TheRaysteve Happy to hear it!
9 year old video. Damn time flies! God bless dude
i'm 13 and i'm into cars and how they work and i saw one of your videos and they are really cool im learning so much from this thanks keep up the good work
As usual explained perfectly concise.
Great videos. Thanks for taking the time to explain so well. Like the whiteboard - makes a refreshing change from PowerPoints :-)
Very simple but clear illustration.
Interesting explanation on the back/after-fire in cars. I've heard a few high performance and race engines after-fire when starting. It usually happens just before the engine turns over, and the starter cranking sounds really slow. I always wondered what caused that, but now I'm guessing it's a combination of high compression and a rich mixture, but I could be wrong. Is this the case? I've seen a few videos of musclecars that do it and some race cars (NASCAR style?) that do it.
Easy to understand bro, thank you so much!
The throttle closes, preventing air from coming in, but the injectors still inject a certain amount of fuel in the cylinders for a couple revs. This extra fuel doesn't have air to burn with, so it burns on it's way out the exhaust when it comes into contact with oxygen. My apologies, I was assuming you already knew do to some other comments you made on another video - though I may be mistaking you for someone else.
best explanations ever!!! keep going!
3.15 million subscribers congrats. Just so you know thou I was subscribed and noticed RUclips did the unsubscribed thing.
you should be a teacher... I've watched multiple videos of yours and I learn more from you than I do from my automotive teacher... What am I paying him for!!! KEEP UP THE GOOD WORK!!!
ive been along searchin for this question.thanks bro.
The exhaust manifold gets hot from exhaust gas, hence, the exhaust gas is the heat source. If there is any fuel in the exhaust, and the temperature is hot enough, it can combust simply with the presence of oxygen.
maybe you could make a video about where deceleration pops come from? my 2012 camaro SS does this a lot, and there are lots of different opinions of where that actually comes from and what happens in the exhaust.
Engineering Explained could you do a video on how br limiters work and there pros and cons
I have plenty to learn; what I have learned I've learned mostly on my own. I'm a graduated mechanical engineer; you can read more about me on my website (see description) on the about me page.
Thanks for explaining man 🤠
Thank you for sharing, very helpful .
your a master mechanic sir thanks for your video!
On motorcycles, the main cause of (internal) exhaust ignition is a badly seated (leaking) head to header seal. Fresh air gets drawn into that leak and any unburnt fuel mixes with that and causes a very lean air/fuel ratio which is ignited by the next exhaust stroke. This typically happens on over-run, on highly stressed engines.
Really i wanted to know!! Thanx dude
You’ve come so far!!
thank you. can you explain why there is after fire every time when we change the motorcycle exhaust system? nothing else but the exhaust system.
Old but gold, tks.
Awesome videos man! Also, excessive valve overlap could cause afterfiring too right?
A video on N2O systems would be pretty cool. I'm sure they're simple but some of the vocabulary and measurements would be nice to know
Hey dude, your videos are great and really usefull, i'm not sure that you are in to, but it'll be awesome if you make a video about carburetor picking!!.
Nice video bro
Left ya a like, my buddy's blazer loves to do this when he gets off the highway and turns off his truck.
Yes.
This is super helpful,
I would check the electrical system first for misfiring. Plugs, wires, etc.. Could very easily be a bad spark plug. I'm pretty inexperienced in auto-repair though.
Haha sarcasm haha
my car had 2 spark plugs almost ready to spin out and 3 vacume leaks+i fixed those. i think a mechanic did it. ripped me off $300. my car is running good now. i avoid retarded mechanics in this area+rediculas!!!
Great explanation
Great video
Dude your the best
Very clear explanation! But there is one thing that keeps puzzling me. On the newer models of Porsches (9x1 onwards) with 'sport exhaust' fitted, the sound they produced are mesmerizing. They sound just like after-fire (banging and cracking noise). May i ask how are these sound produced given the fact that backfiring may not be the answer to these new cars with modern combustion technology. Thanks.
I am a big fan of your channel btw :)
on the turbo 3.0 liters it's programmed into the engine management system as a 'Turbo Anti-lag' feature. Some continued ignition in the exhaust system helps to keep the turbo's Turbine Impeller, which is situated in the engine's exhaust stream, spinning faster. This way, when you reopen the the throttle the turbo is spinning at a much higher rpm and ready to drive the Turbo's Compressor or Intake Turbine more effectively.
The exhaust gas temp is hot enough to combust gasoline vapor, if oxygen is present.
Hmm, perhaps if the mixture changed quick enough, but I don't know if it would.
High A/F ratio, any of the reasons I've listed in the video.
ty very good explanation awesome
Nice explaining thank you very much. I now know why my bike spits fire:)
I don't know everything. But I know enough to get by. I love learning something new.
THank you! this is awesome!
Thanks, and thanks for watching!
Normally the afterfire occurs after a hard acceleration or period of high engine demand. On performance cars, there can be a lag in the reset of the AF mixture so it tends to be a bit rich. He covered what happens when a hot rich air mixture comes in contact with oxygen. There's a lot of factors involved to get that little crackle in the exhaust we all love.
eXACTLY RIGHT. tHIS HAPPENED TO ME. i WAS DOING 130MPH AND HEARD A THUD. Backfired.
I can die in peace now, great video : )
He knows his stuff my college teacher showed me his video during classes for explanations just like this video.
Please explain how a valve bounce or valve float occur. Got experienced it myself but I don't understand since I'm all pure stock.
Normally pretty simple, you're over revving your valve springs to the point they dont close fully by the time the came rotates back round to open it again, and bounce is a spring I believe too soft which cant keep it shut so when it does close the force of it closing causes it to 'bounce' open again.
@@Papa7Bravo Newton's first law!
nicely explained
Can you do a video on the Mitsubishi Evo 3 misfiring system please? I'm really curious as to how that works.
Your vids are great. You are a very good teacher. Now, suppose I actually wanted a little aftercare on off- throttle deceleration. The loud gurgling and burbling sound. What would be the best way to tune the aftermarket ECU to achieve this? I just think it sounds cool! I had a S2000 that did this, but I don't know how it was tuned to achieve it. I'm building another one, this one supercharged, so what would you suggest? (Interestingly, some manufactures are building this into their street cars such as the Fiat 500 Arbath).
Can you please explain the Anti-lag system on turbo cars? Thanks. Great videos
Quang Chu I have two videos on it, have a quick search on my channel. :)
Although you think that the engine isn't getting any fuel or air when you completely take your foot of the accelerator, the engine management software still adds some fuel, and leaves open the throttle body a little bit even though you think the throttle was closed completely. Then the engine management system also retards (slows in time) the ignition so it occurs in such a way that ignition hasn't been fully completed before the exhaust valve is opened (more or less). This way on a closed throttle there is some amount of unburnt air/fuel mixture that ignites within the exhaust manifold to help keep the Turbo's Exhaust Impeller Spinning at a higher RPM - hence less lag when you go back onto the throttle - pretty slick, right ?
im a big car enthusiast since i was kid and i love your videos man!keep it up!one question though: so supercars e.g. Lamborghini aventador that we see in videos afterfiring whats the reason behind that?are they runninh rich f/a mix??
Ahh, the time machine of youtube recommended videos
The flame itself may not do much, but it's not too great to send a lot of fuel through the cat, or burning fuel for that matter.
Is ignition Delay related to the starter / coil ? i.e. of coil is very old not functioning properly etc ? thanks for sharing this valuable info
@Engineering Explained - Can you please make a 'Part - 3' video explaining how 'afterfire' happens when the throttle is closed and the engine rpm is dropping on a carbureted engine? Resulting in exhaust pops, crackles and sometimes flames.
Some say it is a small amount of unburnt fuel entering the exhaust and igniting due to heat. But I'd still like a video explanation of it please :P
P.s I love your videos :D very well explained.
+mnsoans I have a carbureted fully stock Apache 160cc motorcycle with a catalytic converter which gives pops and crackles when the engine's RPM drops after rolling off the throttle. Hence the request :P +Engineering Explained
Good video
interesting explanations
Outside of wasting fuel, is there any detremental effect to running rich over time? I know I was for a little while before I got my large O2 sensor fixed.
Thanks!
I love how this got recommended in my feed.
Likely, yes.
very imformative yet not boring video! short and to the point u should be a teacher at UTI or something
Would anyone know what would cause a single backfire/afterfire during WOT? It sounds like a really loud bang, a big tire blow out, or maybe a gun going off.
Dammit man I couldn't help but to subcribed.
Engineering Explained, I have a question I have wondered for years now. I know many cars and more commonly motorcycles, use secondary air injection to reduce exhaust emissions witch can cause popping on deceleration. But, on fuel injected engines, wouldn't deceleration fuel cutoff (DFCO) prevent ANY unburned fuel from being in the exhaust in the first place? My 1999 mustang v6 automatic always lightly popped out the exhaust when decelerating, how is this happening if the fuel is supposed to be cut off on deceleration?
not sure but my glass packs do that popping on deaccel also. +i will find out and answer this question since my son would know
@@charlesdowns1691 and?
Jason, “Engineering Explained”… I have another explanation for the "Lean Mixture After-Fire", and though this is from real world wide band O2 data logging, while tuning on Motorcycles and ATVs (a 4-Stroke combustion engine is pretty universal): I have noticed that when the engine is up to operating temp, and tuned properly “for performance”, the engine especially when you roll off the throttle or close the throttle plates at higher than idle RPM, the mixture goes so far on the lean side of stoichiometric, that the spark plug doesn’t ignite it and when you have 2-3-4 “Cycles” that get dumped into the head-pipe it now has enough fuel (and oxygen because it didn’t get burnt/ignited in cylinder, PLUS many of these engines have secondary air injection systems) that it hits the hot carbon now ignites the fuel/air mixture sending out the well-known BANG-POP-CACKLE we are so familiar with, most commonly with low restriction exhaust systems. (DFCO “Deceleration Fuel Cut Off” on EFI equipped cars and some bikes is mostly for economy, as in the performance world, drivability trumps fuel economy, and almost eliminates this, they will however, sometimes “pop” in the DFCO transition period.)
I had a vacuum hose come loose in an 89 Eagle Premier. When I tried to shut off the engine, it backfired so violently that it blew my muffler apart. The back of the muffler blew off and the case split open at the weld. Scared the crap out of me and everyone else at the gas station.
I had taken off the plastic engine cover while I was working on something and I didn't realize that the engine cover was the only thing holding the worn out vacuum lines in place. Once I reattached the lines and put the cover back on, I never had another problem. Except for the extremely loud exhaust of course
Can you explain the different anti lag system? Fuel/ignition cut?