Next is an ECU from an 03 350Z 6speed MT performance. It will work for any trim of 03 6speed. It will work on early 04s also. In 04.5 they switched to wideband sensor in the Bank 0 positions. You need the ECU that goes with your harness. Easiest way to tell is your 02 sensor plugs. The <04.5 have 5 wire rectangle plugs that are different then then the usual plugs you find on the harness. the 03-04 o2 sensor plugs are 4 wire and look like the rest of them.

Code: PC
Model #: mec31-511
If you put this into another Z, it will have to be programed by a dealer
If you are using this for a swap, it needs to be flashed to bypass NATs system
$150 shipped