Originally Posted by SP00NFed
i say just leave it, i think the reason people say it'll be more fuel economic is that instead of being at 4000 rpm at 80 mph (used as an example) you would be around 3400-3600 rpm. just my .02 cents
Throttle position is more of a factor than RPM in gas mileage. Since the throttle position remains the same, gas mileage pretty much remains the same.
The mod is so not worth it. You won't save enough in gas to make it worthwhile...and if you want some balls in 5th gear on the highway, you won't have any.