Ecu tuning 2002/2003 g35sedan (very technical)
These G's have a totally different ECU.
UpRev Osiris don't work on them at all.
Price / performance
Also, does anyone know if tuning will improve my fuel economy?
As of now its not tested, It "should" work with just a adapter harness and new ecu w osiris. But its been around a year and still has not been tested so unless there is high demand I will stick with the PNP Haltech system.








