True Anti-lag And Turbo Life-span

[djr81]

I find it interesting that everyones focus appears to be on the longevity of the turbo & the exhaust manifolds. Has anyone bothered to enquire about what this stuff does to the life of your exhaust valves?

Burnt valves, anyone?

[Beer Baron]

yeah I personally think it's a bad idea and a waste of time and money for anything except a maximum effort race car. and even then I don't see any of the top level circuit cars using such a system. good tuning, and correct size for application turbos mean it's not needed. there is no doubt it's damaging to your car.

[Beer Baron]

lol, I just realised this thread title is funny. "true anti-lag" what you have is not true anti lag. like you mentioned it's just an ignition cutting misfire type.

[paulr33]

but isnt that the basis for anti lag?

on launch induce spark cut to create backfiring and wind up the exhaust housing

on gear change if the user flat shifts induce spark cut to wind up the exhaust housing

what other form of antilag is there ?

[Beer Baron]

the real deal has control over both fuel and spark to get things working. and it can be mapped against load and throttle. ie you can have the anti lag kick in when you back off the throttle. if michael has his set-up to misfire as he is acclerating between 3000 and 4000 I would say it's having a negitave affect, not a positive one. have a listen to wrc cars to get a feel for where (ie what throttle position) the anti lag is operating.

[Adriano]

I have setup a few cars with anti lag on autronics, but to some degree it can be done with all programmable computers. I cant see any reason why you would ever have the antilag operating for 30 seconds. IMO there are two differnt schools of thought for antilag, drag and circuit. Drag just gives a stationary rev limit, allowing boost to be developed ready for launch, this can be used with enrichment and retardation for better results. Secondly there is the rally car style which is primarily to maximise transient throttle response. This can be setup in many different ways, stepper motor on the throttle. air injection(as late evo's) and rotating idle . Circuit cars dont tend to need it, as they tend not to need instantanious throttle response as it tends to unsettle the car. The other way of doing antilag for a car is to set your high rpm/light throttle load cells(above 3500rpm with vacuum below 15")to a mixture of 12.5:1 and retard the timing to 5 deg. In doing this upon gearchanges in nthe upper rev range, it significantly reduces transient response or "lag". This seems to also work well on the track with big turbos, as it can be done cheaply and can be tailored to suit the driving style. It also doesn't affect any other driving characteristics, and is a set and forget sort of thing.

[Kaido_RR]

yeap its a big waste of time i will agree 100% there but i got it cheap form yahoo auction, and wanted to give it a try (wasn't really looking for any sort of anti-lag full boost under 3500rpm is good enough for me)

Beer Baron, when on full throttle the system does not missfire (so i can be accelerating down the straight and the system wont engage) BUT when on half throttle (for example taking a turn) the system sometimes turns on and results in the car jerking around like it get full boost but the throttle position (half open) wont let it use it all. This can be very frustrating as it normally results in my jumping off the throttle more (slowing down) or opening on the throttle more and losing grip (then taking the incorrect line).

I wasn't able to get my data logging system to work (epson ej1) so i wasnt able to properly time a run with the system on and one with it off. BUT it did feel as if i was going faster (coming out on turns i was higher up in the rev range, and getting a generally higher max speed for the track)

then again i am still new to track time, so it could of just been me improving over time and learning to uses my cars power and brakes more efficiently.

ohh discopotato03, the system doesn't have a launch control feature so basically i just have to hold the rev in the rpm range. I should also mention that i just did this for fun to see if it would make a difference, i dont have a issue with the lag the pro s turbo creates or lack of

And im due for a tune up sometime in the near future, so i get them to launch the car in 1st with the system on and off and see if it really does work

Cheers Michael

[Kaido_RR]

lol, I just realised this thread title is funny. "true anti-lag" what you have is not true anti lag. like you mentioned it's just an ignition cutting misfire type.

ahaha when i bought the system i was under the impression from the translation it was true antilag lol. Guess i need to invest in learning Japanese

random purchases from yahoo auction is great

[sav man]

the LWR evo in Targa had ovious antilag, sounded like a auto shotgun on the over-run.