ok to awnser some questions, F.A.S.T stands for fuel air spark tech, they make a aftermarket standalone ecm for gm vehicles, they use all gm sensors and a wideband o2. My FAST ecm was moded from the factory to be used in a honda lol. So what i did was use all gm sensors (as done in the honda kit) and honda injectors and fitted it to my 4agze. I was runing 14PSI on 440cc RC injectors till i cloged them up, so i removed my overdrive SC pulley,installed a stock levin one and went back to the factory injectors just so i could get some use out of my car(was bothering me just siting there in shop takeing up space lol) when i was maping out a baseline fuel map i noticed the low dutycycles and found it very intriguing and thought i would share with every one
im now runing the stock boost of 9.5 PSI on stock cams with factory recomended heatrange ngk plugs. I been out of town lately and havent had a chance to reply ( sorry ) and work on my car. im going to try to get some final tuning done this weekend and hopefully get my car back on the road, will post a updated fuel map once i get one together. The last map was a very rough one and VE probably incorrect in low rpms, i did one pull just to check my AFR and it was holding 12.5 @ 4500+ 2nd-4th