Hi Guys , ive fitted 3.70 diff ratio to a ve a6 commodore, ive speedo reading correctly , vehicle seems to drive fine but i cant really do any full throttle gear changes on the street as the weather is very bad where im loacted and vehicle is turbo charged so just blows the tyres off , im wondering if any one might be nice enough to show what speeds/ rpm they have used for this diff ratio to speed up the process , ive attached the tune file