WHAT IS THE BEST ELECTRONIC UPGRADE

MUDDINSQUID

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What is the best one for the 2008 6.7L I am looking for performance for towing, but mainly better milage. Also I need something that wont be detectable by the dealership. So I need to be able to unload the program, when service is needed, then plug it back in and upload afterwords. any help would be nice. I just bought this a few weeks ago and love the truck butafter the new computer update the milage sucks. Prior to the new compter mapping I was getting close to 22.5 mpg consistant, now I am lucky to get 17.5 consistant. thanks Rick
 

dmizell26

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I wish I was getting 17.5 you're not doing bad if that's hand calculated. I consistently get around 15 to 16 hwy. with or without Edge Juice although I show 18 -20 mpg on the overhead until I go into regeneration. No matter what programmer you use they can all be detected if the dealership is looking for it. Good luck
 
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