Okay so here goes, I have a B18C1 running on a P28 GSR ECU. The engine is in my 88 CRX Si, it has a stock harness with Rywire distributor obd1-obd0 conversion and a ECU jumper harness. I blew a head gasket awhile back and lost a lot of oil so i think the ECU went into LIMP mode with the lost of oil pressure. I have since replaced the distributor, head gasket, and spark plugs. The compression is 190 psi in all four cylinders, the plugs are stock NGK PFR6G-13 with a .052 gap, the spark from the distributor is good and oil level is topped. Im pushing 43.5 psi of fuel to the rail im getting good combustion however the car will not REV past 3500 rpms. Ive unhooked all the main fuses ecu, main, battery etc. even unplugged the ECU and battery then reinstalled everything and still the car is stuck in LIMP. I even went as far as buy a new P28 and still the car is in LIMP. From what Ive read it could be a bad map or O2 sensor but Im not sure no one seems to know exactly what to do with a LIMP mode. Any help would be awesome!