| way far back near the idle valve i hear some hiss but dont know what to do about it if its the unit itself or something else and u can hear the ABS booster wind a little bit from that too. i notice that when i shut my car off and everything is quiet down and everything i guess the tract of the intake air is still working and i can hear this big hiss coming out until it dies down particularly drivers side underneath like down the engine or fender wall area. Also sometimes when i drive the exhaust backfires some flames out back through the mufflers big and small, and also backfires down below where exhaust and downpipes meet, i mean i cant see it of course but i hear it and feel from under their and then the back could this kind of leak cause backfire in the exhaust system? sometimes you feel like its time for fireworks lol. i gotta get my car running back to 100% full power. I believe its only hitting 8psi. It pulls like it does but once it hits up over 3500rpm in the gear it doesnt feel like its making more power anymore, its just where its at. This been killing me for long time. Vacuum pressure at idle goes down to -22, -24. Flunctuates back and forth at stops and goes even lower sometimes. Its always changing, but never can be a steady -20 like it used to and when u rev it in neutral it only goes to -10, before used to hit 0. I know im saying alot, it could be more than one problem. Maybe even the turbo itself. Any advice and help would be great to solve this
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