My problem is, my car came with a p14 ecu because the car was originally a prelude si. The h22a1 runs great except there is no vtec. I now have a p13, but when i plug it in i run into some problems. The idle drops to like 200 rpm, then the tach goes up to 1200, then it drops, then it goes up and keeps doing that. It also smellslike gas which leads me to think its running rich. The car also has a small backfire when driving. However, once the car is warmed up it runs relativly good. The idle seems more stable and it no longer smells like gas. Any ideas as to what the problem may be?