Thread: Differences in tunes within same category
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Old Tue, August 3rd, 2010, 12:50 PM
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The differences in the 65DD and 80DD are just that....15 HP when you have your foot to the wood.

The only time I really recommend the 65DD tune is when the customer is not interested in the 120R or higher. The differences in power between the 80DD and the 100P are not enough to justify both tunes, although the shifting characteristics between the two are very different.

Since you are interested in the 100P (which is a VERY good performing tune with minimal smoke), I would recommend the 65DD tune. The accelerator pedal feel and shifting are identical to the 80DD save for the last 2/3 accelerator pedal input (which if you're going for mileage and efficiency, you won't ever touch that amount anyway).

Your thoughts on the towing tunes are spot-on. No comment needed.

Anything "hotter" than the 100P program is simply fuelling more heavily down low. The stock injectors are not good for much over an additional 100 rear wheel horsepower anyway, so the 120 and 140 tunes simply add more fuel off the line.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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