Anti-Lag wtf does it do exactly

[sideshow]

antilag also melted my catalytic conveter within 5 minutes of running it on the street

antilag is basically the turbo boosting at low revs with the throttle sortof closed

sort of like stalling up an auto to get boost

[dynomatt]

I use antilag on my GT4...I run the steel turbine because the ceramic ones dont cope to well with it.

I have a Motec M4 pro and the antilag is similar to what the others have mentioned...throttle is locked open at about 17% (try that with your normal car and find out that you'll hit redline in about 1 second) so the Motec has an idle control function that keeps the revs below 1500...mine has the idle you've heard on the old school rally WRX's etc...sounds like it's hunting (some people call this rotational idle). When you switch the antilag on, the only thing that happens is when throttle is at 0% (ie when I've backed off or idling), the timing is retarded about 30 degrees which spools up the turbo. As soon as I push the throttle past 5% (I think it is), the antilag function turns off, and it reverts to normal maps...as soon as I back off, it kicks in again.

I'm nowhere near 1 bar at idle...the best I can get is about 70kpa...but then I've deliberately made it mild in order to preserve the turbo...although I destroyed it in the last event.

As you make it more aggressive, the transitional throttle becomes a bitch...it's harder to drive off throttle and it becomes like a switch.

As to the autronic having the antilag switched on in a road car (as mentioned in the first post) I'm surprised...Motecs and others do not have it on by default and require it to be tuned (because the basic antilag map is pretty ordinary)...unless the tuning shop had a rally car as the benchmark map...which would be a bit dumb because of the restrictor.

Anyhoo...mine crackles and pops and carries on like you wouldn't believe...but it does sound cool...and flames out the back is always a good thing.

I'd never run it on a road car though.

Matt

[poombah]

You'd prolly find most people with this type of system (apart from a track car) would only use it for drags or autokhana where keeping the turbo spool on the motor on boost would prove useful.. autokhana you have low speed, tight corners and you need the extra kick in the guts of having a turbo on boost to get moving so those twirps in mx5's and the likes dont hand you your ass in a bucket and in drags obviously having the turbo already spooled between gears (and sometimes combined with flatshifting) would be advantageous.

that said it does sound cool at the lights if only toyota didnt use ceramic turbos on me bunky