Hello! I have a 1986 300zx NA 5 speed - Its a project I picked up and it had a pretty bad misfire at idle. Swapped in a new dist cap rotor and the works and I have come to this - it won't rev past 2000 now. I put in a new MAF(the one I had was water damaged) and I put on new connections.I'm lost as to what this could be - ecu codes are 31/23/12 - fixed 23 and cleared - still left with 31/12. Possibly the ECU has gone bad? Perhaps I have bad connections at my solder points.


Any suggestions?