Thanks disco2shaun , saved me a reply,, yep no cat so turbo should spin up better.. earlier?? wiv replacement pipe . they are pretty gutless below 3000 even then it doesn,t giv u much ooomph. gonna giv it good service and check maf , ecu etc.. sayin that it runs smooth and pulls ok but you have to giv it some welly! and of course rev it up like a tuning fork to pull out of junction,