I did a 3rd gen 5.9 swap with a DPS 64/74 in a 14CM housing. If I were to do it all over again I would do a s467.7 or something closer to that. I fight high EGT's when towing 60 - 68 mph but over that and the temps come down, yeah I know its not safe. I tow a 18k, 41' 5th wheel toyhauler at 70 - 75 mph with no issues.What did you go with, or would you recommend with 10k below daily tow?
I’ve only got the throttle up to around 40% I’ve been babying it since this morning. I’ll keep this all in mind this evening when driving around to get the kids from school and stuff. Tomorrow is the big day, I’ll be running it about 700 miles north with a trailer. I’ve always been told that a tow is a good way to get a transmission going, idk if that’s the same for a fresh tune.I don’t have any input on Calibrated Powers tuning but after flashing the ECM go easy on the throttle for the first couple hundred miles, get lots and lots of up and down shifts in from a cold transmission to a warm transmission then start putting in kickdown shifts. The transmissions adaptive settings need to stabilize and it takes shifts at certain conditions for it all to happen.
I’ll bare that in mind while towing tomorrow. Of course it’ll all be interstate, but if you’ve ever taken I-65 you know there may be a lot of up and down shifting 😂🤣. I drove it 45mins/35 miles or so up to my brothers and back home and noticed a big difference on the way back. Still babying the throttle and probably won’t really get in it until I’m at my destination tomorrow.Your adaptives only adjust so much per key cycle. I find if towing really soon after a flash, the shifts hit harder for quite awhile when aren’t towing anymore. At least that’s what I’ve noticed when flashing in changes mid towing. Towing will help with getting adaptives to adjust in the higher torque range but if you aren’t getting lots of up/down shifts, you aren’t much adaptive adjustments. Adjustments only occur when shifting and different ones require different trans temps or kickdown to adjust.