Tried this with an X-celerator. Lost power everywhere. Tried all sorts of things with spacers and jetting to recover power--nothing worked. Removed extensions and power came back. IMO you need the right cam to get what you want. J.Rob
Wow! This surprised me. If I remember right, the X-cellerator has pretty short runners, right? Would assume the extentions would have upped the whole range.
