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Disabling AFM won't necessarily increase your efficiency, but it will help your engine last longer. AFM is what the factory designed to keep the mpg in the "ok" zone with the EPA. First thing I did when I bought my truck was turn AFM off with my tuner.
 

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For a 2008 the Max Energy 2.0 will not work. You have to go diablo or a range device or do some more searching. Again the Hypertech Max Energy 2.0 will not work for 2008 models
 

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Gozzie said:
For a 2008 the Max Energy 2.0 will not work. You have to go diablo or a range device or do some more searching. Again the Hypertech Max Energy 2.0 will not work for 2008 models
What makes you say that? I know of several people that have used Hypertech for a 2008.
 

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Maybe in the past. It will not work now, You should go to their website. Put in your vehicle information and it will tell you what functions it will perform. AFM is not one of them (or at least it wasn't 8 weeks ago when I bought mine) 2009 and up it does AFM
 

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Great, then that's another option for you. I like the tuner. It's very simple to use. Autoanything.com has the best prices and mine was overnight shipping for free. That was sweet.
 

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If you plan on doing ANYTHING more than just turning off AFM, in regard to powertrain modifications, I would highly recommend you purchase your tuner from either a local shop that can give you custom tunes as you add on, or from someone like Lew at Diablew.com. Otherwise, you will have your tuner, and you will be able to load the "custom" tunes that are loaded on it, and adjust certain parameters, but if you start getting into long tubes, cat delete, cam, etc. you're going to need a custom tune. The handheld won't be able to adjust for things like that.
 
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