relief pressure and flow control makes fine-tuning on the fly simple and quick. With large
1.225" inlets and outlets, the PERRIN Blow Off Valve is sized perfectly to relieve any
amount of boost pressure without fear of compressor surge. Don’t be fooled by giant
oversized blow off valves, these inlet and outlet sizes were chosen to ensure the perfect
balance of flow and to maintain boost in your system, without ruining response by dumping
too much boost.