Is there a difference in MAF from a JDM 90-94 SR20 to a USDM 95-98 SER? Can you hook up a 98 SER MAF with 98 SER HArness to a 91-94 JDM Engine? I am having lopey idle and misfire because my computer is not reading the signal from the MAF I've tried a 91-94 SER MAF and a new 95-98 SER MAF that I ordered from Rock auto with no luck. Any Help will be greatful.
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You need to match the MAF to the ECU, shouldn't be that confusing.... that goes for the wiring harness too.

Ok, so lets just say that I had a 98 SEL and I swapped the ECU with a 96 SER, then you are telling me that the 98SEL will not run right?

I'm saying if the part #'s of the MAF's are the same then you will be fine.