DPTuner Tow Tunes

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Apr 8, 2013 | 05:47 PM

#16

Justin@DP-Tuner

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From: Oakdale, CA

Quote:

Originally Posted by 1L243

I installed my DP Tuner for the towing tunes and I am really happy with it. I tow about 11.500 lb toy hauler. I have 40HP and 60HP Tune Decel and 60HP Economy... But what I am trying to find out, what is the real difference between 20,40, 60 and 80HP tow tune? What is the Tuner doing or not doing in 20 HP tow vs. 80HP tow tune? I like the shifting in the new tunes especially for towing. Will the DP lock up the Torque Converter more often in tunes vs stock?

The fueling strategies are different between all of those tunes as well as the transmission strategies. We label our tow tunes for the recommended towing weight as a safety measure. The fueling in 20T is much different than the fueling in 80T. The main reason is to keep everything in check temperature and pressure wise. What I mean is you would not want to add a lot of fuel while towing a ton of weight. The more weight the truck has to pull, the harder the engine has to work. When you start letting the engine work too hard with more fuel, your EGT's will rise. The transmission pressures are also changed between tunes to help better compensate for the load. Beyond fueling and transmission pressures, the tunes are pretty much the same in every other aspect.

Quote:

Originally Posted by BWST

I'm curious what you decide works best in terms of which horsepower tune to use with that load. I have not towed heavy yet with the F6, but when I had the edge juice, I would run it in a hot setting while towing so I could regulate EGT with the pedal, and avoid the leg strain of WOT operation.

With DP, I'm wondering if I can get away with that, or if the tune will deliver better shifting with full pedal travel - in other words - maybe it will not shift down as much/lug more if I am not using the last 1/4 to 1/8 of pedal travel.

I'll be trying 40T and 80T out in a couple of weeks with the camper - we'll see what it does.

Our tow tunes should enable you to drive normally without needing to regulate your temperature. They will have power throughout the entire travel of the pedal and are designed to keep you in gear longer without down/up shifting so much.

Quote:

Originally Posted by Smokiesman

My fiver runs about 14k and I have been using the 60T except on the real hard grades. When I got down to FL I tried the 80E and watched the gage very close. Man it pulled like a freight train and even on some short grades my temp never went over 1000 deg. Would the 80T cut down on the EGT pullin steeper grades ? Little confused between the two ?

Smokie

The 80T would help with EGT when on grades compared to 80E for sure. However, with that amount of weight you should be using the 40T tune. You can use whichever tune you would like, but that is the recommended tune for that weight as far as safety goes.

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Apr 8, 2013 | 05:53 PM

#17

1L243

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darn...The secret is out....

Apr 8, 2013 | 05:56 PM

#18

BWST

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From: Lake Stevens, WA

Quote:

Originally Posted by Justin@DP-Tuner

My point was that the tune might not downshift when it needs to, if it looks at the TPS as part of the input as to when to shift, since it would not be seeing the last 1/4 pedal.

I do like that the tunes allow me to stay in gear longer - great power!

Apr 8, 2013 | 05:58 PM

#19

1L243

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Justin...Thanks

Apr 8, 2013 | 06:01 PM

#20

Justin@DP-Tuner

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From: Oakdale, CA

Quote:

Originally Posted by BWST

My point was that the tune might not downshift when it needs to, if it looks at the TPS as part of the input as to when to shift, since it would not be seeing the last 1/4 pedal.

I do like that the tunes allow me to stay in gear longer - great power!

The truck will still downshift when/if it needs to. The PCM can sense load before the pedal gets to that point.

When I first ran our tunes years ago(before I worked for DP), my favorite thing was the tow tunes. It made towing so much easier on me and I always felt as if I never had a trailer behind me.

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Apr 8, 2013 | 06:02 PM

#21

Justin@DP-Tuner

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From: Oakdale, CA

Quote:

Originally Posted by 1L243

Justin...Thanks

No problem. Feel free to contact us if you ever have any questions. We would be happy to help you out.

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Apr 8, 2013 | 06:32 PM

#22

Smokiesman

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From: Bryson City NC

Hello Justin! Thanks for the info on the 80T. When I pull a hard grade like here in the mtns I do run in the 40T. But when I get in GA or flatter land I have been running in 60T . I tried running with the 80E but on long not real steep grades the temp started to climb. But down in Fl I ran 80E and boy she was a hoss! I would be almost tempted to swap out the 60T for 80T and that would really cover my bases! I like to run the tow setting in town because of the firmer shift program. Whats yer opinion?

Smokie