i had this motor in a 92 civic hatch dx. i pulled it, sold the car and got a 95 vx. it a obd1 b18b1 out of a 94 integra and all i did was port and polish the head. supertech valves. stock cams and injectors. skunk2 intake manifold and throttle body. I had to use stock manifold for now and there is no exhaust. the block is all stock. any time you try to rev it if falls on its face like something is shutting off. I tried every sensor on it, and a different computer. My buddy told me I have to take the harness off the single cam motor that came out of the vx and put it on the ls. Its not the stock vx motor that came in the car, its a d15b and I dont think its vtec. what should my next approach be?