Definitions
A compressor bypass valve (CPV) also known as a compressor relief valve is a vacuum-actuated valve designed to release pressure in the intake system of a turbocharged...
I am also assistung my pal in doing a custom muffler for his Gilera Nexus 500 sport scooter. I bought him his current muffler ( GPR Italy, carbon - look muffler ) December last year, and until now, the perforated...