3rd Gen High Performance and Accessories (5.9L Only) Talk about Dodge/Cummins aftermarket products for third generation trucks here. Can include high-performance mods, or general accessories. THIS IS FOR THE 5.9L ONLY!

Need a programmer for an 03 to do tire size

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Old Nov 12, 2007 | 11:48 AM
  #1  
DetroitAmerson's Avatar
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Need a programmer for an 03 to do tire size

I bought a DiabloSport Predator thinking it would do the tire size change but it only does that on the 06 and up. Mileage is also a factor. The truck had been getting about 17 to 17.5 mpg with the Diablo Predator my mileage is now 21.5 to 22.3 I have changed from stock tires to 325/70/17 (about 33.5in tall) speedometer off by about 8 mph. I have to have a programmer that will let me correct my speedometer. I love the power & mpg gains from the predator. Would like some input on what my options are.
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Old Nov 12, 2007 | 02:01 PM
  #2  
MikeyB's Avatar
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From: Tomball, Texas
The SMARTY can do it. Or you can take it to the dealer and have them recalibrate for the tire change.

MikeyB
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Old Nov 12, 2007 | 05:56 PM
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Rob C's Avatar
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From: Chandler, AZ
Smarty, Smarty, Smarty, it can do it for you and give you one heck of a ride too!
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Old Nov 12, 2007 | 06:00 PM
  #4  
sliqwille04's Avatar
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From: Adairsville, GA
Your mileage might drop some when you correct the tire size, at least mine did, but definitly Smarty!!!
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