the p28 is meant for a single cam vtec motor. If you absolutely need the car to run, do not go above 3-4k RPMs if you are using this ecu. Have someone socket it and burn you p30(obd1 b16 maps) maps onto your chip. Then you will have your car running right, and ready for whatever extra mods you want to throw at it. Or you could just trade your p28 for a p30 and be done with it no extra socketing/chipping needed.