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hey i just recently got a 05 chevy c 4500 and the milage sucks i get 11 at best was wondering if anyone knew if a progamer would help and what brand would be the best plz help.
 

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The Diablosport is the only one I am aware of that works on the 4500 series trucks, and I would need your VIN to get you the right one. The 4500's are kinda a different animal.
 

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My buddy has had good luck with the Diablosport Predator on his LLY 4500 Rollback for his garage. Says his mileage has gone up approx. 2 mpg and really helps when he has a car on the back. He does drive it like a flippin' idiot, so his mileage might even be better if he kept his foot off of the floor once in a while.
 
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