I know what a blow off valve is but where does it blow out the air out off does the air blow out threw the exhaust or what?
well since we all know what the heck your talking about and whats it for and stuff I choose ( A.) and that's my final answer it doesn't blow me so who cares for 3000 alex.
It blows out in to the air.
Depends on the type of blow off valve. Some vent to atmosphere(just blow it out into open air) others recirculate(blow the air back into the intake farther upstream). Which one it does depends mainly on where the blow off valve is located in the system. If the car has a MAF(mass air flow) sensor and the blow off valve is located after that sensor then it has to be recirculated, because the sensor has already registered that air and if it vents to atmosphere then the engine will run rich because the ECM will be putting too much fuel into the engine.
