i have a stock 95 gsr swap in a 95 civic lx.okay i took off my iab's and just ran a p72 ecu that was chipped for an lsvtec with a b16 head..good power no vtec....i tried a stock p72 and it had no power but vtec did work..i tried a stock p28 just for vtec and it cuts in and out..when vtec kicks in it sounds like a single cam.lol i have no intake on it either