I'm Robert new to this. I just bought my first Honda which is an em1 rhd conversion with a b16a for dirt cheap in cali... car runs but won't run right. . It came with a p72 ecu which I think it's gsr. Has vtec solenoid plugged but no oil pressure switch. .. It revs high and low sometimes... Check engine light bulb was removed by old owner. . Can't find plug to plug in my scanner... car is on limp mode... I was told to get wire harness from obd2 to obd1 and chipped p28 ecu.. Please help Thank you