Well thats my problem. I just replaced the clutch, so my s13 has been siting for about 3 weeks (work takes all my time.) I changed the maf twice thinking I got a bad one from the j-yard. I am getting a good ground on one wire and 1/3 of a volt on another. I'm assuming theres a power, ground, and return wire to the ecu? Maybe the return wire is cut. Ill get a
continuity tester and make sure theres no breaks in the wires. What else could make an SR not rev over 2500rpm? There are two unclipped harnesses hanging from my transmission, but they don't seem to go to anything. I have driven the car like that and it shifts fine and measures speed.

SO IDK IMA FUKD?