Originally Posted by imjello

I had my Z service at the dealership on Saturday and they said they tried to do a software update on the ECU ( or ECM ).

Anyone know what the update is for? It failed and would not take the update, I assume cause I have an UpRev tune, but they blamed my aftermarket exhaust.

I checked the nissan publication site without any results
http://www.nissan-techinfo.com/whatsnew.aspx

Usually tell them to not do anything extra on the car, but failed to remind them this time i guess