So my 2.5 inch lift is going on my 2010 JKU this week. Along with that are the 315/70R17 Trail Grapplers on stock wheels with spacers. I currently have a K&N intake and superchips. Have stock 3.73 right now. Regearing soon. I have an automatic.

My questions.

For those of you guys running something similar, what mode do you have the superchips on? Does tow mode help in this case?

 

Best thing to do is play with.Our settings may work for us but not for someone else

 

Im happier with my performance 91. 87 didnt do anything other than smooth out throttle response down low. 91 actually gave me a bump in bottom end and the jeep idles better too. Gears will give you the best results without going forced induction.

 

I originally ran 91 tune, and it seemed to run a bit stronger. Then i searched online and read many guys run the tow tune for the better shifts and lower RPM torque. I basically never hit over 4500 RPMs in my JKU, so the extra 2 HP from the 91 tune wouldn't benefit me.

So I'm running tow now for a few weeks. Feels as strong as the 91, and my last wheeling trip, my computer said I got 20.4 mpg over 127 miles. Hard to believe, but maybe.

 

Ok so I think I will try tow tune until I get new 5.13. That and the intake should help. I hope lol

 

Tow tune is probably best tune for Jeeps that are in need of a regear. Also, keeping the OD off helps with the constant shifting.

 

I ran Towtune with 35" and 3:73 for a few months and was not too happy with the shift patterns. I run 91 octane performance tune and find that the shift pattern is much better. As well as the extra torque it provides.

 

3.8L engine??