Getting a Superchip tomorrow for my manual 08 JKU to fix speedo after 35's and just wondering what all it will do and if I could get someone's who has one opinion and experiences with it. Thanks guys

 

It will do a bunch of cool stuff. To fix your speedo, you will have to measure your tire, they told me to measure from the center of the rim to the ground. It adjusts in quarter inch increments. If you have regeared, you can program that in. I run mine on the 91 oct tune. There is options for a 87 tune and a tow tune. There is also a program to turn on your fan manual or at a lower setting. When you first plug it in, it will let you know all the available options!

Good luck with it, if all else fails, call customer service, they are real helpful

 

Cool, sounds good. Does that mean you actually are paying for premium gas to use that gas setting, and whether you do run premium fuel or not, had the chip improved your mpg?

 

You can start off just using the 87 oct, then move up. You need to run a couple of tanks full to really notice a differnce. My MPG,s really didnt change, but I noticed a differnce in power for sure.

 

Yes to use a tune you want to run the same octane as the tune or higher

 

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