tryen to fix somebod els mess

ok i just recently bought 89CRX SI W B16A SWAP, AND ITS RUNNING RICH. it has a pwo(obdo) ecu that suposedly has a spoone tune chip in in, which i cant find, aTd22u dist (obdo). but the intake mainifold i know is off the secong gen b16 whic as yall know is (obd1) because it dosent say mpfi, and i think the block is also a second gen cux the ser# under the engin code statrs with a 5. so how do i go aboutfixing it? get a jumper harness from obdo to obd1 and get a obd1 ecu and obd1 dis or is their an easyer fix a little lighter on the pocket if ya know wat i mean


thanks in advance

it could possibly be the ecu but most obdo b16's from what i hear run rich most of time anyway. but as far as the manifold goes i have obdo ls running obd1 computer and it doesnt affect anything, to my knowledge all sensors are the same and the block doesnt affect anything unless you jump to obd1 then you will need to wire up the knock sensor

try adjustable fuel pressure regulator and bump fuel pressure down a pound or two