my friend swaped a 95 vtec motor in his 93 accord he has idle problems revn up and down i changed the iacv and did nuthin and as for vtec not engaging he tried to put a 94 vtec comp in it and it would do nuthin but smoke and redline at 3000 with a 94 question is can vtec be hooked up at the comp with the stock comp maybe wires could be tapped to make it engage or do they make a 93 vtec comp for this car ????.and anyone have any idea why it would rev up and down.???????? I DONT KNOW ALOT ABOUT THESE CARS TRYING TO HELP A FIRIEND

 

Any 93-96 USDM P13 or 92-96 JDM P13 ECU will work. You have to run 3 wires for VTEC.

I fixed the idle problem on my h22 just by adjusting the idle screw in th TB

 

thanks