Okay, when Im boosting i get this silence like im letting off the throttle even though im not. Its only when im on partial throttle 60-70%. Its like when you gunning your car then it hits silence for about 500rpms then comes back this happens anywhere from 3000-6000rpms. When im @ WOT its fine, sounds normal. boost/power is there, no lights on the J&S. Any thoughts?

 

kinda like a stutter, sputter, or misfire?

 

hmm kinda sounds like the turbo starts and stops spooling