Europa

... from idle/zero throttle. It's only when I go from off-throtte to on-throttle, and is only when the engine is cold. Now, I'm 99% sure this is the wastegate, but:

1) assuming it's the wastegate, is this the death knell for the turbo, or is it no big deal?
2) is there anything else it could be?

This is an '02 225 with 55K miles and all the mods in the sig below (except I'm back to the stock DV - diaphragm DVs are just so much quicker).

JohnLZ7W

Got a metal piston DV? Is it in backwards? Is the vac line attached to it?

Europa

No; stock DV is back in the car and has been for a while.

Horch it

you say turbo, death and nil....did you beat up your turbo?

Europa

LOL, yes, the car has been driven hard since new (though no track days).

The question is, *if* it's the wastegate, does this mean that it's dying?

iTTaliano

it may not be the same thing but I thought I'd chime in.

Mine turned out to be that the bolts loosened up slightly on the turbo. To be exact, the bolts that connect the downpipe to the turbo. Hence the chirp when it was cold. I guess the metal would expand enough when it was hot to tighten itself up.

I hope yours turns out to be the same, since it was an easy fix :-)

Horch it

but I am not mistaken, the waste gate can be replaced separately....no?

TTschwing

It stays pretty much closed until the N75 taper starts to open it at higher RPM's. Never heard of one chirping!

Europa

.... doesn't it stay open at idle?

Europa

That could be it. It sounds like a rally car.