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River City Diesel Max Mileage Tune, worth the money?

3K views 10 replies 9 participants last post by  BigGreen06 
#1 ·
I'm getting a River City Diesel Max Mileage Tune to go with the SCT Livewire Tuner, is it worth the money? The tune will be $175. Will I be see my mpg go up at all and if so how much will I gain in mpg?
 
#11 ·
I got RCD's 525 tune for $175, and get about 19 hwy (most of my driving). They told me if I got 2 tunes I'd only have to pay $25 for the second tune.

James.
 
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