Ive fitted a fmic 2day Took it for a test run and it dosnt seem right, every time i put my foot down i could hear a whistle sound quite similer when turbo spool up when you fit tip. the car does feel laggy and not that resposive. dont have boost gauge yet. Does this sound a like a boost leak?
By fitting fmic do they cause extra sound from the engine bay or no different at all?
By fitting fmic do they cause extra sound from the engine bay or no different at all?