Theres a sound a car makes when it changes gears or revs up it sounds like air being released how to make that?

Like its of course with sports cars but it sounds as if air is being released i was wonderhow to get that effect ina carTheres a sound a car makes when it changes gears or revs up it sounds like air being released how to make that?
You're looking for a blow off valve or a bypass valve. The blowoff valve releases charged air on a motor with forced induction. The whole reason behind the blow off valve is to release the pressure in the system to avoid damage to the turbo. When a turbo is spooling and producing boost the throttle plate is open sucking air in and expelling it though the exhaust which spins the turbo. When that plate shuts the turbo is still spinning from the exhaust and the extra pressure (boost) has no where to go. If the extra boost isn't vented (blowoff valve) or recycled (bypass valve) then the air can go back towards the compressor of the turbo and cause damage to the compressor wheel blades.



Here's my old setup from 2005

http://i145.photobucket.com/albums/r217/



You can see the big valve right before the throttle body and intake manifold. This is exactly what you're looking for.



So either convert your car to turbo (it's a lot of work, believe me) or buy a turbocharged car.Theres a sound a car makes when it changes gears or revs up it sounds like air being released how to make that?
Its a blow off valve on turbocharged cars. Unless your engine has a turbo, you cant get that noise. Install a turbo or buy a turbo car and you can install the valve and get what you want.
those race cars use an air shift so yes it is air being released. their transmissions are special trans's and the daily driven cars arent likely to spend the bucks for one. by the way I think the sound is awsome too. watching the long beach grand prix the 1st time thought the cars were blowing up when they shifted. i know that the guy who said turbu release was doing his best but the release is only happening on down shifts not up shifts as the driver doesnt let off the throttle.