Originally Posted by Jordo!

As one who has previously boosted a NA car and gone through all the experimentation, excitement, sucess, and failures, let me share with you one piece of advice:

Don't do anything to your car that could break something you can't afford to repair.

In other words, if you don't have the money to rebuild a blown engine/trans, why are you spending the cash to boost it?

It's less of a gamble boosting a factory FI motor/trans, as they are already built stout enough to handle the extra stress of FI, and simply retuning/increasing the boost a bit is less likely to cause a problem.

Anyway, maybe in reality it's only a 1% chance anything will fail -- but unless you have the cash to cover it, why take the chance?

After all, this is why we have warranties and insurance -- to protect against the slim chance something goes wrong during normal driving. Unfortunately, if something goes boom from an aftermarket FI set up, fixing it is your problem (Note: Possible exception: Stillen...)

Anyway, if you have the money to burn -- by all means, go for it. Worst case scenario, something breaks, you'll get it repaired.