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Originally Posted by guruerror
Columbia, Waldorf, Gaithersburg...that's a 'MD HUMMER Club' just waiting to be formed!
Programmers typically allow you to adjust various settings in the truck's computer; so you can let the truck know if you've changed tire size, gear ratio, etc. It'll then adjust speedometer, shift points etc to compensate and keep the truck in its power band.
You can also use it to program different types of tunes: Performance, Towing, 87 Octane which will adjust the truck's settings to perform better under those circumstances.
It's a must if you change tires size or gear ratio. When I moved to 37s and 4.56 gears the truck was very sluggish, so I got a Superchips Cortex programmer and adjusted the appropriate settings (plus added the Performance tune) and it got everything back to normal.
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I'll work you a package deal when you're ready AtomicG.
You get that grill lineXed yet Brent?