Is it possible for a capristo bypass valve to rattle like the oem's do? I have a loud rattle from my 355 when i come off the gas........it stops immediately i go back on the gas..........it stops when i put her in neutral.......... Could it be the capristo valve i fitted 2 years ago? Howard
I guess its possible but unlikely based on the design. I suspect it's your Y pipe but without actually hearing it, it's hard to tell
