How bad is anti lag for a turbo.

[Oompous]

I'm sure this subject has been beaten to death multiple times but for some reason all my searches yield nothing but "OMG I JUST GOT ANTI LAG" threads.

So in all honestly if you rarely use anti lag how much is it going to shorten turbo longevity?

and when i say anti lag i dont mean 2 step. i mean anti lag while shifting.

like dis.

[CELison]

anti lag is hard on turbos, creates a ton of heat. But as long as you don't launch at every light you should be ok.

[Oompous]

anti lag is hard on turbos, creates a ton of heat. But as long as you don't launch at every light you should be ok.

the anti lag file a friend found on nefmoto also has anti lag at 5500 shifts. is that worse than launching?

[CELison]

the anti lag file a friend found on nefmoto also has anti lag at 5500 shifts. is that worse than launching?

it creates a lot of heat as the fuel ignites in the manifolds and exhaust. I have anti-lag launch control and no lift shift. I use the NLS more, and so far my turbos are still alive.

[Oompous]

it creates a lot of heat as the fuel ignites in the manifolds and exhaust. I have anti-lag launch control and no lift shift. I use the NLS more, and so far my turbos are still alive.

how long have you had it?

and how does your anti lag work?

[DeleriousZ]

Probably harder on valves depending on how the system is set up. If the mixture within the cylinder is exploding with the exhaust valves open, it will probably burn up valves. Not sure how the one on the audi is set up but the aftermarket kits i've seen operate like that.

[greg@dubaudi]

If anything it looks fast and cool with all the flames and popping.

[S4 00 2.7]

Cool video.

[034Motorsport]

Spark plugs get eaten like candy.

[NOTORIOUS VR]

also make sure you aren't running cats

[8520]

This thread is relevant to my interests.

To clarify,

nls = foot planted on floor throughout run without over-revving motor

Anti-lag = keeping turbos spooling during shifts so there is no lag on respool.

Correct?

[DeleriousZ]

Some anti-lag learning:

http://www.rallycars.com/Cars/bangbang.html

[NOTORIOUS VR]

This thread is relevant to my interests.

To clarify,

nls = foot planted on floor throughout run without over-revving motor

Anti-lag = keeping turbos spooling during shifts so there is no lag on respool.

Correct?

yes... although NLS will essentially do the same as anti-lag... although true anti-lag will work on downshifts too (via a throttle kicker, etc)

[fshowcars]

no one here needs anti-lag... if you are making or breaking your runs on an RPM dip during shift, you wouldn't be on here asking about it. If you are, you don't need it on a streetcar... and use your programming to protect the motor... rally drivers eat turbos because of this and really, current rally, uses much more complex computing to achieve safter 'anti lag'...

if you are asking about longevity and considering this, you are mixing two unrelated items lol.

[zakario]

I have been religiously trying to kill my current transmission and turbos and have launched with anti-lag over 60 times in three months. I also use NLS to third and fourth all the time with no signs of wear. My transmission actually shifts smoother now

This is not a recommendation that it is fine. Just giving my experience

[nthusiastt]

probably pretty tough on clutches as well...

[Nez]

probably pretty tough on clutches as well...

The two main problems are you will kill the Clutch and Cats that's all but it all depends how often you use it

[CELison]

I probably have 50 anti lag launches and 150+ nls. no issues

[Rdp616]

No, you don't really need it. But who doesn't like to shoot flames on the asshole behind you?

[ThirdStrike]

I use my 2-step9launch control,) but I dont see a valid use (with k04's) when I have WOT shift(anti-lag) engaged. Twin turbo instantly spools. .

[zakario]

I use my 2-step, but I dont see a valid use (with k04's) when I have WOT shift(anti-lag) engaged. Twin turbo instantly spools. .

You're not pushing it

[Oompous]

This thread is relevant to my interests.

To clarify,

nls = foot planted on floor throughout run without over-revving motor

Anti-lag = keeping turbos spooling during shifts so there is no lag on respool.

Correct?

anti lag is launching, NLS is shifting

[ThirdStrike]

WOT shift=anti-lag=no lift shift
2step = launch control

They all do the same thing; Limit rpm rev to a specified rpm limit while retarding ignition timing while allowing fuel to dump, creating combustion boost and exhaust fire (if you dont have cats)

[Oompous]

I wonder if you can get pulled over for it. or would it just be for exhaust? i cant see any police being like "oh you got no lift shifting you're screwed."

[CELison]

I wonder if you can get pulled over for it. or would it just be for exhaust? i cant see any police being like "oh you got no lift shifting you're screwed."

I highly doubt that. I wouldn't recommend doing anything WOT around a cop. Only around your buddies, people you are racing, and girls you want to impress with your display of fire and noise

[Rdp616]

And girls you want to impress with your display of fire and noise

LMAO

[Oompous]

I highly doubt that. I wouldn't recommend doing anything WOT around a cop. Only around your buddies, people you are racing, and girls you want to impress with your display of fire and noise

im not saying i would WOT around a cop. im just saying perhaps one were hiding around a corner on an onramp

and impressing the girls goes without saying.

[zdriver]

Well worth it

[dubzackvr6]

what girls?

[skinnytirez]

lol- the cop is going to be way more concerned with your speed than the fireball you are shooting... 2nd gear tops at appx. 65mph

That being said I have been using anti-lag only when "girls you want to impress with your display of fire and noise" and NLS for over a year and haven't encountered any issues.
I never use the NLS on shifts from 1-2 as the 1-2 shift collar in our transmission is garbage...

[Oompous]

lol- the cop is going to be way more concerned with your speed than the fireball you are shooting... 2nd gear tops at appx. 65mph

That being said I have been using anti-lag only when "girls you want to impress with your display of fire and noise" and NLS for over a year and haven't encountered any issues.
I never use the NLS on shifts from 1-2 as the 1-2 shift collar in our transmission is garbage...

im wanting this shit more and more by the second.

[CELison]

[nthusiastt]

[maxxxs4]

I dont really understand exacly how does the anti lag and no lift shift work, I am confused. Could someone explain it clearly please because my J fonz tune is set up with a 4000 rpm anti lag and 5500 no lift shift. My car is still waiting for the flywheel so its not running right now. Thanks

[CELison]

als- Retards timing and dumps fuel, ignition happens in the manifolds to spool the turbos without any load on the engine.
nls- cuts spark when clutch and gas are pressed in @ a specific rpm and over (usually 5500 or so) This allows the tb to stay open, the fuel being dumped along with the tb being open keeps the turbos spooled between shifts.

[maxxxs4]

als- Retards timing and dumps fuel, ignition happens in the manifolds to spool the turbos without any load on the engine.
nls- cuts spark when clutch and gas are pressed in @ a specific rpm and over (usually 5500 or so) This allows the tb to stay open, the fuel being dumped along with the tb being open keeps the turbos spooled between shifts.

Alright thanks, would water/meth increase or decrease the potential risk of damaging the engine or there is nothing to do with it at all ?

[Oompous]

Alright thanks, would water/meth increase or decrease the potential risk of damaging the engine or there is nothing to do with it at all ?

would just require different timing retardation and such

[skele4door]

I think you guys are making this a bit more complicated than it needs to be. As I understand it the tuners that are adding NLS and ALS to our factory ECU's are doing it very simply. In essence they are adding 2 extra rev limiters that work by retarding the ignition timing. As people have already said when you retard the crap out of the timing the spark plug fires when the exhaust valve is open and all of that energy makes it's way directly to the turbine wheel instead of pushing the piston down and raising rpm. There aren't any extra air valves or injectors being added like some high end racecars use.


The normal rev limiter is only active when the clutch is engaged.

The second highest rev limiter (NLS) is only active when the clutch is disengaged AND you are moving.

The lowest rev limiter (ALS) is only active when the clutch is disengaged AND you are stopped.


For example say you're rev limiter is set to 8krpm, your NLS is set to 6krpm, and your ALS is set to 3krpm.

When you get ready to launch you push the clutch in while stopped and got WOT which actives the ALS so you sit there are 3krpm. When you let the clutch out the ALS is immediately disabled by the clutch being engaged and the car starting to roll. You wind first gear out to 8krpm where the rev limiter shuts things down. You push the clutch in to shift which activates the NLS and drops the engine down to 6krpm. You make your shift and continue on through your run up to 8k, clutch in for a shift down to 6k, etc etc. The throttle stays wide open for the entire run.

[julex]

The Me7.1 implementation you're all talking about is very simple. There is no retardation involved at all in either NLS or 2-step. Both work by just intercepting and interrupting spark event over a set engine speed limit (RPMs) .

The net result is that the engine is still fueling like normal while the spark event is suppressed. This results in completely unburned mixture from no-spark event to travel down the manifold where it ignites once in contact with hot manifolds or when next batch of, this time ignited and hot, air arrives.

Hence the fireballs.

The code to accomplish this is very simple and you can see it on nefmoto.com where I started the original thread on NLS/2-step implementation on me7.1. With a help of couple assembly gurus, the code was developed and upgraded to incluede bells and whistles like clutch pressed condition, rpm and speed level for 2-step, rpm and plate angle levels for NLS.

Enjoy.

[NOTORIOUS VR]

The Me7.1 implementation you're all talking about is very simple. There is no retardation involved at all in either NLS or 2-step. Both work by just intercepting and interrupting spark event over a set engine speed limit (RPMs) .

The net result is that the engine is still fueling like normal while the spark event is suppressed. This results in completely unburned mixture from no-spark event to travel down the manifold where it ignites once in contact with hot manifolds or when next batch of, this time ignited and hot, air arrives.

Hence the fireballs.

The code to accomplish this is very simple and you can see it on nefmoto.com where I started the original thread on NLS/2-step implementation on me7.1. With a help of couple assembly gurus, the code was developed and upgraded to incluede bells and whistles like clutch pressed condition, rpm and speed level for 2-step, rpm and plate angle levels for NLS.

Enjoy.

Sums it up right there...

All the more reason to see why a well liked tuner that is charging for NLS and ALS for code that isn't even theirs... they just took it from a community and started selling it as an "option"