Can anti lag build boost from a roll

[GTScoob]

The IHI line of Turbos that is meant to handle anti-lag isnt just any old IHI turbo, you can get the anti lag ready turbos from prodrive, and true anti lag is more than retarding the timing etc. That is if you are talking about rally style anti lag.

Matt

I remember reading something on an Australian subaru forum years ago where all the guys down there were talking about how their VF22s held up much longer than the Garrett turbos and Mitsu turbos they had tried.

Anyways, to answer your first post, I dont think anti-lag would help you build boost from a roll, its main purpose is to keep the turbo spooled when you are off the throttle.

[David88vert]

Anti-lag IS used in drag racing, and can be used with a 2step. It is just setup differently than rally racing.
Most aftermarket ECUs that have anti-lag, like Motec and AEM, use a retarding of the timing to go to a rich condition and introduce unburnt fuel into the exhaust housing of the turbo. You have to go pretty far past TDC to do this (usually I start around 40 degrees). This is the way they do anti-lag for drag racing.
Rally sometimes uses a different way of getting gas into the exhaust manifold - but the effect is basically the same. Some systems have separate injectors that shoot fuel directly into the turbo manifold.
Anytime you have fuel being burnt inside the turbo, that build heat and puts stress on parts.

[josh green]

you dont have to pull out 40 degrees on a honda, I know a lot of guys used MSD or some ignition box to use as antilag. Digital 6 you can retard up to 10 degrees for "nitrous" but you can use it however you want. Thats enough to build a good bit more than just a 2 step.