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Tow Rigs and Trailers Hey, not all of our Jeeps are great on the highway. Post here for tech related to getting your XJ to the trailhead.

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  #1  
Old February 28th, 2010, 10:58
NoisyTJ NoisyTJ is offline
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Join Date: Jan 2010
Location: St. Joseph, MO
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Gas tuners

Hey guys, my tow rig (and DD until I get the 4.6 stroker finished) is a 2003 Chevy 1500HD 4x4 with the 6.0L. I love the truck but like most people, I want more power. Right now I have a K&N cold air kit, and the stock exhaust with a Magnaflow dual in single out muffler. Im interersted mainly in a little more power for towing so its not downshifting on every slight grade I come to. I also want to firm up the shifts a little bit, the shifts from the 4L80E just dont feel like a HD tranny should to me. I'm pretty much split between the Superchips Cortex and the Diablosport Predator. Does anyone have experience with either of these and some feedback?
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Old February 28th, 2010, 16:50
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Johnnie Walker Johnnie Walker is offline
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Re: Gas tuners

An LSx or LS style intake will net you some ponies.. And, is bolt -in, of course.
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Old March 8th, 2010, 20:52
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StylerG StylerG is offline
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Re: Gas tuners

check out blackbear tunes, its more detailed than an out of the box tune and will be personalized for your truck. its what i have on my tahoe and could notice an incredible difference in power, shifts and even mileage.
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Old March 10th, 2010, 00:32
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flexinxj flexinxj is offline
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Re: Gas tuners

Both are great tuners, very similar real world gains. Main difference is the superchip can be updated on home pc with just a USB the diablo can to but it takes a cable that's a little harder to get and it's slighty more complicated, neither are hard but the superchip is just simple and straight forward. Personally I prefer superchip to diablo but aside from what I just said they aren't much different
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