RE: OS 91 FX Tach readings
12x8 APC - 11,700 peak, idle around 2200-2300 after a gallon of break in.
- stock muffler, powermaster 15%, OS #8 plug, 75F and humid at around 500ft ASL.
This motor is the older style of remote needle and I do get some bubles, but it only seems to affect the midrange, idle and full blast are rock stable. I'm going to try the perry remote needle to fix the midrange.