i did search and didnt see my problem, so here we go. i have a 1990 rex, b16 jg edlebrock intake mani, 65 mm throtle body, venom rail b&m regulator and accord injectors, if i am just driving not halling ***, about 5000 rpm my car acts like its not getting gas it sputters and runs like ****, but *** soon as I give it a little more and get in to vtec i goes away. what do yall think

 

BUMP

 

i am having the same type of problem. at slight throttle it hesitates, but at 4500 when vtec fires it opens up fine and runs great. What was the car before the swap? Was it an dpfi or an mpfi? If dpfi check to see if your spark plugs 2 and 4 are fouled. If so then what we have come up with is the injectors are hanging up or sticking and dumping to much fuel and fouling the plugs. wirte back.