ahh, get an Air/fuel ratio meter. They are pretty cheap and will help you with tuning your engine. A fuel pressure gauge and an exhaust gas temp. gauge will also help in tuning your car. And dont forget the ever so important DYNO runs that will tell you what works best. BTW what are your cam gears set at as far as retard and advance go. I know my best friend had his set at 4deg. advance on the intake and 3 deg. retard on the exhaust and thats where he found the best over all performance at, and his fuel pressure was at 40psi on his B16a3.