B-B-K

I just installed CTR cams with ITR springs, had my head ported and polished along with a Quaife LSD on my first gen B16. Along with having probs with my clutch being stupid, my motor goes "flat" at 4 grand and when ever I give it more then 40% throttle (I have a VAFC to check my throttle postion). I give it gas and it just stops, doesnt detonate, sputters a lil, and doesnt move. When I hit the "flat" spot, it kinda throws me forward. I have no idea.

Could this be cam timing? I had my head milled 15 thousands and I have my cam gears both at zero. I know I have to make up for the head being milled. Do I advance or retard the gears? at idle my ignition timing is at 16 BTDC.

Any ideas? I know its hard to diagnose a problem over the computer but Im just looking for ideas. Im still learning about this stuff

Thanks
Matt

ShakesTheKlown

Sounds like you're in limp mode. Check the ECU for codes.

B-B-K

Think maybe I could be running lean? I talked to some guy and he said its posible since I had the head ported and polished that Im takin in more air than fuel. When the motor goes "flat" my A/F gauge goes lean. Like I said, it happens after about 40% throttle. Maybe thats the point where Im bringing in more air and my fuel cant keep up.

Dont know for sure either, just throwin out some ideas.

Matt