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Old 12-18-2010, 07:16 PM
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HoustonHemi HoustonHemi is offline
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IMHO, with a 4th Gen, your MPG won't increase enough to justify the cost of the tuner.

Your results will be closer to 'fractions' than whole numbers, if that.

You'll get better MPG with the 91 tune, but not enough better to justify the extra price of the fuel.

For 4th Gens, the SC Flashpaq and Cortex each have 4 tunes each. (Mileage XS, Tow, 87 and 91) The only difference between the 2 units is that the Cortex can be used on diesels.

I have the Cortex,,,. The MPG results mentioned above are from my experiences over the last 6 months with all tunes other than 'tow'.

Your mileage may vary,,,,,,
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