I really felt the difference between the 87 to 91 Octane tune. I switch mine once the fuel light came on the cluster...

 

Just did mine last week.....went straight to the 91 oct tune.....nice difference in performance....really notice the better throttle response and how much more responsive the engine performs all throughout the rpm range.... i'll be staying on the 91 tune....

 

I run the same RPM's on the Highway with the tow tune as with any other tune. The primary difference seems to be that the shifting pattern changes. It stays in gear a bit longer, it doesn't up/down shift as much and the shift transitions are more solid.

The gas mileage may be a bit less, but it is not material. I track MPG using an iPhone app on every fill-up. It is about the same as it was running the 91 & 93 tunes. Not great, but the same

The JK Unlimited is a heavy Jeep -- especially when running big tires, adding bumpers, etc. I have ran all of the variations of tunes. The tow tune seems to handle the weight of my Jeep better than the others.

 

I want one of those!!!!

 

Thanks...I am gonna try that setting....

 

Anyone tried the gas saving tune? I just got mine today and I'm on 87 now but I thought I'd try the save to see what that was like.

The tow sounds good to I'm almost never on the highway.

 

you will like the superchips. I have the airaid cai,gibsons duel exhaust and set on 91 octane . That is all I use for gas. Could not be happier