Saskatoon, Saskatchewan, Canada
My Posts: All Forum Topic
The Mav90 muffler WAS the root of my problems with my Extreme/C-spec ( non-pumped ). As soon as I got an MPII, all the problems went away ! ( hard/impossible to adjust mixture and have the setting stay for any period of time, over heating, lack of power ) The Mav was ok when the engine was new, but as it broke in and I started to lean it out a bit to get some power, the problems started showing up. The MPII is a little louder, but it's running great, has lots of power, and it stays cool enough to hold your fingers on the backplate as long as you like !