Try the latest MS2 Extra Beta, as there were some odd changes made in the 420a wheel decoder that used wrong tooth size values. The past few newest beta's only use one edge of each tooth. Set dwell around 3.5ms to start, check the ignitor to see if it gets too hot at idle. Lower dwell if it does.

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)