All the benifits of the normal piston design, but without the audible 'whoosh'.
All the benifits of the normal piston design, but without the audible 'whoosh'.
The DV30 was originally designed as a direct replacement for the factory fitted Bosch dump valve. The Bosch valve is made of plastic, contains a rubber diaphragm and is known to fail when subjected to too much boost pressure or excessive temperat...