Originally Posted by
grizz1
+1 on the 086, especially on a big track - top end to burn

Leave the shims like that for another .5 gallon and try the O'Donnell 97T plug on the 30%. The GX and MG motors really seem to like the 97T's especially on 30%, where a medium plug is good with the higher nitro content.
The only other pipe I would look at is the GO 2072. I find I get better economy with the 086 though, and a little more bottom end response too.
Ok Ill try it. Do you know the comparable size of the pipe( is it close to the size of an os 2060 or re11 pipe) ? Im putting it in a mbx6 and the fitment is tight. The 2 pipes I mentioned fit well.
Thanks