Is it nesesery ( if I speed it right? ) to have a Blow Off valve?... I do have a Trust Relafe Valve on the Intake but...just wander!! I do use the car for every day drivng and for Drag Racing.!!

Thank You for your Help!

Hi,
if you buy the trust blow off valve for the fj20 it goes where the releif valve is anyway

So a trust relief valve just screws straight into the throttle body where the factory one goes? Is there a specific trust model number to use? Is the tread the same etc??

Hi,
The trust relief valve should just screw straight into where the factory one is. the relief valve doesn't work the same way as a blow off valve does, this valve is there so if the pressure in the engine starts to get to high it will let the pressure out through the valve where the blow off valve is designed to stop air pushing back onto your turbo when you change gears so you compressor wheel will still be spooling up while driving and should give you a better response with the throttle, just remember if you don't take your foot off the acclerator there is no need for a blow off valve. if you don't want to fit a blow off valve you can always get a 360 degree thrust bearing for your turbo.