I emailed QUAIFE and this was their response:
“I don’t believe there is a difference in the gearbox between the USDM and the UKDM versions.
But if in doubt, use the technical drawing from the website to check whether the QDF20U is the correct replacement for the FK7 standard diff.
If you...
I cannot find any conversation about tuning for increase in MPG on the V2. I know that most of us who bought the KTuner V2 made the purchase so we can extract more power, including myself. I am curious if anyone have done a tune that have improved mpg?
I havent test it yet, but i would assume that the power would be flowing backward and the positive becomes negative when the parking light if off. Therefore in theory it should work.