Join Date: Mar 2012
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Thanks for the feedback gents. I ran the truck mostly in 2nd through the mountain pass on the way back. RPM's ranged between 2300 and 2800rpms which equated to 30-40mph, shifting occasionally into 3rd when the road let up. If you've never driven it, Highway 20 just East of Ft. Bragg, Ca. is a very long grind consisting of tight turns, switchbacks and grades ranging from 6-9% over about a 25 mile stretch. 30-40mph is all most folks tend to drive pulling large trailers.
What I wanted to learn is what John Wood shared with me.....that is, with dp-tuner tow tunes installed, the TC remains locked up most all the time. That told me what I needed to know. Either drive in stock mode and put up with less HP and TQ allowing the TC to lock and unlock while shifting and heating up the trans in the process or drive with the tune installed, enjoy the extra grunt and shift accordingly.
I for one did not know the tuner kept the TC locked so much while towing. I do now and have changed my driving habits accordingly.
2000 F350 7.3 4X4 SRW, SC, LB, VDO Gauges, JWVB, PHP Hydra, Tru-Cool Max, KYB Monomax, BTM, BD Brakeloc, S&B CAI, zoodad, WW, Firestone Airbags