I have a 305 tpi with cold air intake, adjustable mass air flow sensor, airfloil, 52mm throttle body, ported plenum, adjustable fuel pressure regulator, roller rockers, cam, headers, exhaust, thermomaster chip. driving it around i noticed that it pulls harder at 3/4 throttle than at full throttle. i have tried adjusting my mass air and my fuel pressure and i cant seem to make any improvements. I can't really complain, i ran a 14.6 at the strip last week. the first run i had the mass air hooked up and it ran a 15.1 and i could feel the same thing. i ended up unhooking it and thats when i ran a 14.6. I don't get it. any help would be appreciated. and any appinions on what should be my next mod.