I have 1990 CRX DX model and its got a 1g b16a in it with an ls integra trans for now. I'm pretty sure vtec works cause i hear it engage around 5100 rpms or around their. But the car isn't pulling like it should, i know its not suppose to be hold on to your pants fast. But a little peppy would be nice. My friend with a rex has a b18a1 in it and he thinks his is faster with just intake and exhause same as mine. Not going in compettion but mine should feel quicker. It just feels like it has no kick in it. i got 210,205,215,205 compression so the motor is fresh, no codes, everything works, i hear vtec engaging, just not fast. Should i try new cap and rotor again and wires cause their old. its got new plugs and fuel filter. Would a vafc II help out by tuning the car and checking the air fuel through out the rpms. And also could the ecu be bad?