I have a greddy bov and it used to sound everytime i take off when i let the pedal off at 3k now it only sounds at 5k or more and not even loud. What cpuld be causing this?
BOV dont sound loud anymore - 6G Celicas Forums
Turbo taking longer to spool than before?
Turbo producing less boost than before?
Wastegate not closing completely?
All of those things can lead to what you're describing
Turbo producing less boost than before?
Wastegate not closing completely?
All of those things can lead to what you're describing