I know that early 2003 G Sedans have a few differences that others don't. One of these is the ECU is an older Nissan style. These are not capable of being flashed by Osiris and most aftermarket EMS.

Does anybody know if you can swap ECU's directly from other G's??

 

Yes, Im using one from a wrecked coupe for the osiris reflash on my 03.5 sedan. Should be done this week, will post the graphs.

 

3.5 sedan ecu isn't the Type I early G35 sedan ecu that the OP is talking about.

Right now, the only option for the OP is to send the ecu to Technosquare. No other flash will work right now. No aftermarket piggy backs will plug and play either. Diff ecu connector.

 

Wow, I'm glad I read this actually...that REALLY blows!

So say I were to make a plug-n-play adapter, or even solder the other connector on...would this work? Has anyone attempted this before?

 

Where & Who does the reflash ?? How much??

 

No one has made an adapter that I know of.