WhiteLX

I have up a couple wastegates off Audi 5000s and I was wondering what kind of HP levels they are able to support. It there a certain HP level when the wastegate is just too small to bleed off the amount of exhaust in order to keep the boost level in check?

Thanks,
Eric

1 slow Audi

The more boost you run the smaler the waste gate can be cause it doesnt have to vent so much exhaust gases.
if you have a big turbo and you run low boost with smal waste gate (5-10psi)you are gona experience boost creep.

snoogins

What is "boost creep"?

CMH

where you want it. It is the same thing as a boost spike.

snoogins

aka : "turbo lag"?...

CMH

you get too much boost. I guess you can call it wastegate lag. =)

StevenH

Basically, the wastegate lets out some of the exhaust gasses through a different path than the turbine to prevent it from spinning to fast which would create too much boost. If it can't let out enough gas the turbo spins faster than you want it too creating more boost than you want which is boost creep.

CMH

That is what I said in my other reply up further.

a4blur

Thanks