Custom tunes at Altitude

[cleatus12r]

Originally Posted by travisunderwood

Makes sense. I don't tow that much, so 80 daily had been planned as my primary - and the one I have been using. 80 Tow looks like a smoke show, only tried it once. What tune should I go with to maximize MPG - that is my end goal is maximizing MPG over stock, not looking for best performance.

If your permanent residence is located at high altitude, I'd probably stay at a 40HP or so for towing.

My reasons for recommending 40HP Towing are as follows:

1. No excessive over-fueling. Towing power will increase but will not dump unnecessary fuel into the engine.

2. No excessive over-fueling. Less fuel will require less air.


3. Mileage will increase over current 80 HP tune due to the reasons above.