Does anyone who's turbo get a ridiculous idle, such as from say 1200 down to like 800, back and forth every second or few seconds?? It was very slowly like this when tuned and now is very fast, "annoying" lol....I played with bis screw, but no matter where it's idling it's jumping back and forth.... Boost leak test? Idk, any suggestions? Thanks

 

sounds like the fuel trims are whacked out...

 

still new to the turbo world but i do know on a n/a car if it's doing something like that it can be the TB. If there is a build up of carbon/oil around the throttle plate the amout of air at idle closed is reduced and the computer is trying to compensate and it does some odd things.

 

What setup are you running in the car? Change the injectors or fpr?

 

x2

Also i hope you are not venting a bov that is open at idle cause that will do what you are discribing also and stall out the car after shifting