I also did the thermal bypass and noticed a significant temperature drop inline with your observations. The 68RFE is a good transmission if you treat it right. Forget the aftermarket tuning for more power unless you are willing to dig in your wallet and have the trans "built". Heavy towing only in 5th gear and below and manually shift down on the hills to minimize "flare shift".
__________________
2016 Ram 2500 Laramie 6.7 CTD 4WD,
Air-Lift Bags w/compressor, retrax bed cover
|