PHP Tunes towing on flat ground. What tune? - Ford Powerstroke Diesel Forum
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Old 06-06-2014, 12:29 PM
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PHP Tunes towing on flat ground. What tune?

I have a Hydra with Stock, 25 tow, 65 tow 80dd and access to all the tunes in the PHP library for my PCM. The truck is a 2000 F350 DRW that is always carrying a heavy 2014 Lance 1191 camper in the bed. The camper weighs ~ 5,500 lbs.

If I'm out on the highway, flat ground, 1600 RPM, typically 58 mph, little or no boost happening, exhaust temp less than 500, trans temp less than 160, the truck is just loafing. I don't need extra horsepower, torque, etc. at this point. What tune do you think I should be running for durability and economy?

My signature has my mods. Thanks in advance.
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Old 06-06-2014, 12:34 PM
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I would start with the 65 tow to start with. But in all honesty, we can guess all we want. You're just going to need to try them and find what works best with your truck.
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Old 06-06-2014, 07:20 PM
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I use my 65 tow for most all of my towing. I may try my 80 dd tune in July when I'll be on the freeway for 4.5 hours at 70 mph.
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Old 06-06-2014, 09:58 PM
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Thanks for the replies. Let me ask the question a different way. I have standard F350 dash gauges + EGT, Turbo Boost, Transmission Temp in a Pillar Pod. I watch all my gauges and don't ever exceed 1150 EGT. With the auxiliary transmission cooler and the deep cooling pan my Transmission never exceeds 170 degrees when on a steep, long mountain pass.

I'm an old guy and I drive conservatively with my load, typically locked in @ 58 mph for best economy and safe stopping distance. Given this, if I'm on the flats in a 25 tow and my EGT's are low and the transmission temps are low do I step up to the next level at 45 tow or 65 tow and run it there as long as my EGT and transmission temps stay in check? I assume the benefit of this would be increased fuel economy, but is there a durability risk in doing so? Like running leaner causing injector problems or some other issue? I'd hate to cause engine problems chasing an extra mpg. Is there something else I should be looking at besides EGT's and transmission temps?

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Old 06-07-2014, 07:19 AM
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Honestly in the flats going a steady 58, you could probably run a 140 race tune and still not be even remotely hot. you wont see a difference until you get on it hard or start to pull a grade as far as temps go.

Plenty of people pull in high HP tunes, you just have to monitor your egt's (and other temps) as long as you monitor temps youll be fine.

With that said, your best mpg's will depend on your truck. On long trips, ill run one tank of fuel (or half or whatever) on one tune, calculate my mpg's than switch to another and do the same thing.
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Old 06-07-2014, 04:28 PM
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Sharp looking set up

IMHO as long as you pay attention too your EGT's I would run at least in the 65HP tow tune, but if your going too be on a long stretch of flat land I'd bump it into the 80HP daily drive, because the tow tunes change the shift points but if on the highway run a higher HP tune unless you feel uncomfortable then switch down in HP.
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