i have an 89 crx si with an A6 block and a z6 head with minor bolt-ons and a cam and its runs great. Before the cam, I ran a 15.1 with a crappy launch, hoping for 14s next time around. And if you havent done so, I recommend getting the obd-1 conversion with a p28 ecu. its a night and day difference compared to an rpm switch. Plus youll have more options with tuning in the future