Originally Posted by JimRS
I hear that Dumpvalves are superb for high BHP engines. if u have a chatter goin and not dumpvalve, it can damage the turbo
got that outta Performance ford mag 2001.

If you have a dirty great turbo, then maybe so. But then only a Re-Circulating one.
IMO the best Dump Valve is the one in the bottom of the Dustbin.