i replaced it with just a different MAF from a 96 ej22 and it runs now for the 40 or so miles i drove it.. i pulled codes after driving for about a half hour (freeway) and found 5:

 

PO100 - Mass Air Flow (MAF) Circuit Malfunction

PO301 - Cylinder #1 Misfire Detected

PO302 - Cylinder #2 Misfire Detected

PO400 - MAP/Barometric Pressure Circuit Range/Performance Problem

PO106 - Exhaust Gas Recirculation Flow Malfunction

 

i cleared these codes and drove another 15 minute's home and so far they've not come back on...what next?

Guesses - MAF - something still cracked/not right.

 

Miss fires - coil pack classic symptoms (for a 1&2, or 3&4 problem). Heads/timing if 1&3 or 2&4. Get a Diamond if possible (rather than generic).

 

MAP code is usualy the small hoses going to that gizmo on the passenger strut tower, or that little quarter sized thing in the middle of a line missing or bad.

 

The 106 doesn't ring any bells of the top of my head.

 

But others will chime in.

If you cleared the codes and they haven't come back, then I wouldn't worry about it. If they come back, then post here and we can help you with them.

they came back this morning, felt like i was towing a semi and it was hard to get above 55, havent got a chance to pull the codes yet though im sure its still the misfire