i have a 2010 jk 4 door sport 6 speed i have looked around and just wanted to see what is the best tune to run 91 with the tow tune or the 87. just want to see what the jk are doing for the best power and mpg

 

Tons of info on this, just look around a bit...


Here is one:
https://www.jk-forum.com/forums/show...light=flashpaq

Can't comment on manuals, but for my auto, the 87 tune performs better than the 91. (somewhere in that massive thread are indications that I may have needed to run a few tanks through for the 91 tune to get going, but wasn't worth it to me)

 

X2 on the flashpaq, I've never ran the 91. But it does alright, gears are whats holding me back.