What's the best computer chip I'm looking for something that has a good Eco mode and performance mode but I have never had a chip so idk any advise thanks in advance and btw I have the 3.8 automatic

 

Take a look at the Hypertech models for the JK's

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Are they comparable with cold air intakes and exhaust

 

I think you meant compatible with cai and exhaust, if so yes... Here u go:
http://www.quadratec.com/products/17614_5001.htm

 

Do you have one and did you notice a difference

 

What year is your Jeep? 2007 - 2010 you have a wide variety. 2011, not so much.

Do a search for Programmers and a million threads will come up. Superchips has been the most popular here but there are a lot of others like Hypertec, Bully Dog, Diablo, etc...

If you are looking for eco tunes, I know Hypertech and Superchips both have them. I ran both programmers with my 2010 and I returned the Hypertech mainly due to lack of features at that time (most which are now available). I currently use a Superchips.

As for power, you may feel a bit of "butt dyno" using one but not significant like adding a supercharger or hemi. I've played with all the tunes, (eco, 87, 91, 93, tow) and there is a difference among them. Not huge but noticeable.

Frankly, the eco tunes are horrible. Yes, I saw a slight improvement in mpg using the gas saver but I felt like I was starting in 2nd gear all the time! I run the tow tune which seems to give me the best power/mpg combo.

 

Well I have an 08 with a 4" lift and 35"s I get 170 miles out of a full tank of gas so any mpg gain will be a big help but I would mostly run it on performance I have a dynomax SS muffler and cold air intake and I have done the viper throttle body mod

Which one is best for my set up

 

I got a superchip and noticed a lot of difference. Think it was money well spent just wish I would of fine it long time ago. I have had for about 2 yrs now. Still like it

 

I'm very happy with my Superchips Vivid.

 

I have a superchips. I like it.