Mine's VX ROM (ECU flash) for Nissan 370Z (Fairlady Z34) 01.01.09

Originally Posted by 245ONQEW

I didn't see this mentioned in the thread yet, but remember, in Japan the standard octane in gas is much higher than even the most premium North American gas.

This was discussed on a GTR forum, namely the JDM R32-R34 GTR's that were being brought over to Canada and the US in droves. JDM ECU tunes will be operating on the basis that you're running Japanese fuel, not North American fuel. You'd have to re-tune the tune to adjust for the Octane deficiency!

JDM Tunes are not only dangerous to use on USDM-bound but Japanese-made vehicles, but they are entirely ridiculous given the access to reasonably priced ECU tunes on our shores.

My advice, take it or not, is that a Mine's or any other companies ECU tune, be it piggyback or reflash will eventually ruin your car, even if you're running 94 octane. Seriously look into ROM Octane conversion charts before buying a JDM Ecu Tune!!!