bignfast

Traded my 2010 2wd lariat screw for a almost identical 2011 lariat Ecoboost back in late June. Truck is fully loaded minus Chrome package, max tow, bed extender, & tailgate step.
First week I had it got the front Windows tinted 20%, bed sprayed with line x premium, and installed a retrax bed cover.
Took the truck to the track Friday for test and tune night and was rewarded with a best run of 14.54 @ 94.91. This was with a race weight of 6301 lbs and 93 octane shell gas. My first run was a 14.66 @ 95.30 with 60' in the 2.2's.
All runs were made with tc off and tow/haul on. Oh and it has about 8800 miles on it now

dbok

Just curious, why did you have the tow/haul on and/or what is the advantage of this? I am guessing higher rev before shift?

bignfast

The main reason is that it firms up the shifts which helps reduce transmisson slip. I am not sure if it changes shift points at wot but it does hold gears longer during part throttle. I turned traction control off due to the fact I had very little traction problems and I did not want it reducing power or applying brakes to control anything

Fordrocks39

Does it really firm up the shifts?

Wondertwin1

With tow/haul on, overdrive is off.

All overdrive is is a really high gear that lowers rpm's at cruising speeds for better mileage. I bet if you made a run like normal it would be the same. Because your foot would be in the floor and it wouldnt shift to overdrive until that was the very last gear you had, but seeing as these trucks are governed at 96(???) It still wouldnt matter. It would redline.


The "firming up shifts" part is just the fact that its not shifting into 3rd(or whichever gear) and then sliding into overdrive, it stays in the legit gear.

zero419

Not true for the newer trucks.

Wondertwin1

I dont see how that could be when thats what it is on every vehicle with tow/haul ive ever driven. I dont believe it "firms up" shifts. When im driving my bosses 08 super duty it doesnt do any of that. But okay.

dcfluid

The T/H mode in the new truck uses all gears including the 2 overdrive gears (5,6) but it simply changes the shift points more suited to towing and locks up the torque converter more to avoid slipping (heat).

mrpositraction

Have you driven the new 6sp? You can be in OD with Tow/Haul on. It most definitely does change the shifting algorithm. Along with the drive by wire, etc. This isn't your grandpa's Ford anymore

bignfast

Hook up a trailer of decent weight and try towing with tow haul and then without u will see a big difference. Feels like a different trans, and tow haul does not lock out any gears in the 2010 or 11's. My trucks (Old 2010 and new 2011) pulls my boat down the interstate in 6th gear with tow/haul on.