Yes, the MS can run fuel only if that is what you want. We havent had any real problems with running the MS for fuel, and the stock ECU for ignition. It's just *really* nice when running lower compression pistons, and higher octane fuel for boost, to be able to dial in some more ignition timing advance for more power, esp when not in boost.. Even still, the MS is easily modified to run spark, and it's ofcourse a great way to have complete control of your fuel map, so it's def worth it

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)