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Old 07-03-2013, 04:53 AM
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Towing Explained....

With all the discussions on EGT's Tow Tunes Etc. could someone explain what is considered Towing and when would we NEED to run a tow tune?

I.E. a 2500 Lb. Bass Boat or 4-Wheeler Trailer, Lawn Mower/Small Tractor isn't going to make a dent in the SupaDudy Capability of Tons.

Experienced drivers share your knowledge please.....

EGT's Hills, Mountains, Phoenix Heat all things considered.

I'm going out on a limb and say we won't really know what is straining our trucks without and EGT gauge which these trucks should have come with.


Last edited by colonel angus; 07-03-2013 at 06:21 AM.
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Old 07-03-2013, 06:12 AM
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I tow a light load with my DD performance tune. By that I mean stuff under 5k lbs. If I have anything heavier than that I switch to a tow tune. 8k tow tune for intermediate weights and a lower power tune for heavy weight. My tow tunes use and engine brake.
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Old 07-03-2013, 07:05 AM
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I call around 4 k the cutoff since I weigh over 1 k more than an unloaded super duty daily

or if the trailer is a big air brake I might go to a tow tune

but that is only if I will see hills if it's flat i might not swap tunes at all if it's a short haul like 2 hrs
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Old 07-03-2013, 11:22 AM
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The differance is in the timing. Tow tunes don't advance the timing like the performance tunes - why you don't get the "light-switch" effect. Timing equals cylinder head pressure. I would agree 4k is good cutoff for needed tow tune. When loaded with a heavy trailer you can get into a prolonged power requirement (high cylinder pressure) that you could never sustain unloaded (you would hit speed limiter). Instantaneous spikes in cylinder pressure are considered acceptable risk not towing, but towing those pressures can be generated continuously, not short duration. I personally have a hot tow tune I run not towing, and a mild tow tune to tow. I run less overall HP but the longevity matters more to me. I have multiple 20-30 different iterations of my tow tunes to get them exactly right and have spent too much time talking tow tunes with tuners. Hope that helps.
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