I tached my stock .60 FSR again today after running in a new Bowman ring. My TNC tach registered a peak rpm of 12,742 and I had it backed off a few clicks holding steady around 12,620ish. This is quite a bit better than the 12,163 I got last week. This was with an APC 11x7 and Powermaster 5/22 GMA fuel. I got it to idle in the 1900's. It would quit after several seconds in the 1800's. I might try a 12x6 next to see how that does. All in all, I'm satisfied with it. If I can find a header I will try a pipe.

David