I need a ecu part ##

[Nibbib]

So I'm in search for a 5speed turbo ecu now I'm not sure if it's any different from the auto one I have but I did get a 51 code but not sure why I wasn't the one that did the 5 speed swap and I've owned the car for a little over a year so a little confused why it took so long to give me a code

[wtdash]

No difference between 5-speed and Auto ECUs for the SS or TW (regardless of the fact that TW's only had Autos).

51 Neutral switch Abnormal signal entered from neutral switch
51 Inhibitor switch Abnormal signal entered from inhibitor switch

You've tried to clear the code and it came back? Have you done the D-check mode for active codes, too?

GL,
TD

Please use punctuation...Makes it much easier to read info.

[Nibbib]

Yea the 51 is in the d-check

[wtdash]

Look on here on how to test the switch...that'd be your next move - not likely an ECU issue.