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.