Car info: B18 obd1 in 88 crx. Chipped P28 ecu. My tach has been going crazy, whenever I put my foot into it it goes crazy and just tach's out. Goes straight to 8k even though I know it's only at 5k. If I slowly accelerate it will get to about 4k then starts pausing and jumping. It'll go from 4 to 5.5 to 7 to 8 in jumps. Any ideas? I've checked all the fuses. Wires seem pretty secure too. One other question I don't know if anyone knows it but thought I'd try anyway. On the ecu obd1 which two wires can I short to get the CEL light to start blinking? The plug on the driverside shock tower is not present on my car which is where it is for the original electrical system. So I thought I'd just go straight to the ecu and just short it out directly there. Looked at the pinout but doesn't say anything about what I'm looking for. Thanks.