Originally Posted by Tazdiablo
Just one question. It shows you going up to higher gears but I read somewhere else that for best MPG you should go to 3.21 gears. Does anyone know about this or which is better as far as mpgs go?
I believe you'd be going the wrong way with the 3.21. That's 10 % lower than 3.55, if that's what's in your Ram. You'd need a lot more throttle to maintain your driving style and most likely never see the "eco on" light up unless you're going downhill or coasting. It's been said that gas mileage is maximized at rpm's where torgue is at it's max. If true, you'd have to drive faster, but then increased wind resistance would drag your mileage back down. It's a no-win situation. I do believe that factory engineers knew what was the best all around choice for your particular model and tranny. My favorite saying is always "if it ain't broke, don't fix it"