Originally Posted by 4x4le

It took a while for my problem to become really present but I found my turbo xs bov to start leaking some. Its supposed to come with shims so you can adjust it but I dont know where mine are. I shimmed mine with 2 quarters though and it works great now. Try it out! I started with 5 thinking that it probably needs a few to make a difference but I took them out 1 by 1 untill compressor surge stopped. I ended up having 2 in there and a great running car.

Also how are you tuned? Do you have controll of engine parimaters? Advancing the nutral decell timing slightly above the idle rpm all the way down to under it is a big help in helping it find its idle. Also having a slightly higher idle speed helps.