In a blow-through system sudden throttle closure when the engine is under boost can cause the turbo to surge or choke. On a road-race, rally, or street car, this can slow response time if you need to quickly get back on the throttle.
A blow-off or bypass valve quickly relieves pressure when you back off the throttle. It may be mounted on the compressor outlet duct (after the ducts merge on a twin-turbo set-up), between the intercooler and throttle-body, or even directly on the intercooler
This Blow off valve’s noise can be adjusted from hard to soft by the turn off a bolt
*As always we recommend our parts are fitted by profesionals.
