Sure we can do that. If would not be the most fuel efficient tune, but great for towing. It would be nice to have this tune in a spare TCM to be used when towing and then switch bad to an FE tune for daily use.

_________________
Providers of wholly developed aftermarket solutions for the KJ CRD.
(248) 977 - 9531

Stop towing so fast and worry about your family's safety. 60 is fast enough.

Sent from my DROID BIONIC using Tapatalk 2

_________________
2006 Sport, GDE FT Eco Tune, Custom Trans Tune
2015 Ram 1500 Big Horn EcoDiesel, GDE Hot Tune

[/quote]
Stop towing so fast and worry about your family's safety. 60 is fast enough. [/quote]

Amen! I consider towing at 60 or maybe 65 in dry with very light traffic to be safe, but anything faster and you are taking yours and others lives into your hands. People need to learn to slow down on our 70 MPH speed limit highways. I hate driving on 70 MPH highways with people running 75+. They don't really realize how long it takes them to stop at that speed until it is too late and they don't have the room they need to stop. Plus the faster you drive the less stable our liberty and other cars get, that is why so many SUV's rollover. People think they are driving a sports car and not a truck with a high center.

_________________
06' Liberty Limited CRD, 178K miles, all stock for now. New to me as of 2/2010.
99.5 Jetta TDI
01 NB TDI
98 Jetta TDI
82 VW Caddy diesel, 5 speed

It's hard to hold for 4th gear going at 63 or less up and down hills. I do respect everyone points on towing. You will be heading down hill and hit 64 and shift into 5th. Then can't hold speed at 60 up the next hill. Then shift to 3rd . You turn the od off and get 12 miles per gallon. If 4th would hold till 70-75 less hunting of gears. The speed limits in OKLA is 75 miles per hour. I do believe the tow tune that GDE has is a good for our little Jeeps. Has anyone used it yet and have any suggestions.

I have thought about a quick change rear end for towing. To help get the speed down and the rpms up a little.

I'm spending a lot of money on my setup to make sure my family's is save. I'm putting the best hitch money can buy. Speed rated tires for the trailer the factory tires are rated at 65 max. Don't want to run my tire at the max speed. I'm not planning on running 75 all the time. But I am planning on holding four gear to a higher rpm down hills to hold speed up the next hill.
Our last trip to Destin Fl was 15 hours one way. Our next trip looks like about 12 hours one way to Red River NM. I would like a little better drive any suggestions would help. Thanks




Got the hitch waiting for some good weather to install. Thanks for your concern for me and my family.

Would a Hot tune hold speed up and down hill at 65 with 4000 pound travel trailer on the back. IN 5th gear.

depends on the grade of course, but if it's anything significant, no way.


even a 1 ton would have a problem pulling 4000 lbs up a really steep grade....

IF you want to go fast up a grade, you need something like a high powered V8 with lots of horsepower..... you will suck through gas, and rev the crap out of it, but you will be able to hold the speed....

unfortunatly, climbing a hill with weight requires horsepower, something that diesels just don't really have (with the exception of bigger, more modern diesels)

IE: a 1996 cummings ram 3500 only has 230 HP, not a whole lot more than we do with a tune.... So even it would have a hard time holding speed up a steep incline with #4000.

but a new toyota tundra has 381 HP (@5600 rpms).... it could hold those speeds up an incline no problem, but you'd need like 4000+ rpms to do it..... sucking back fuel....

A new cummings is 350 HP... a huge upgrade over the older ones...


The tuned liberty and the 1996 dodge 3/4 ton diesel are about on par in terms of performance while towing. Both could hold a speed in top gear with a reasonable incline... but you start getting up into mountain passes, and your going to need to drop speed, there's no other way around it....

I was towing my #5000 trailer, with the equivalent of the hot tune, and I could hold maybe 45 MPH, foot to the floor in 3rd gear, until the temp got too high, then half throttle 3rd gear @ like 25-40 MPH after that..... but we're talking steep mountain passes

The torque of our diesels means we can make a lot happen without the need for a lot of RPMs, and in the city, the torque is awesome, when you need to get from 0 -35 mph with a trailer, our jeeps are fantastic.....

But the math for highway speeds, with lots of weight, and steep hills does not work out in our favour.... 160 / 190 hp just isn't enough to pull 4000-5000 lbs up steep hills at the posted speed limit..... and you never want to push your vehicle to 100%, so that 160/190 is more like 120/150 (stock vs tuned)

Not talking mountains just freeway and normal driving like I-44 across Okla. with out shifting back and forth. I seem to have better results in keeping my speed up when I hit the bottom of hill to pull over the top. If you hit the bottom of the hill at 60 in 4th gear you will be in 3rd before you hit the top.

Then you should be fine...

and the tunes help a lot in terms of reducing the amount of "gear hunting" your transmission does, but ONLY if you have a full torque tune (and a requirement for a full torque tune is a new torque converter)

so if....

stock (with Chrysler recall tune, 250 ft/lbs of torque on lockup in top gear) you find it can't hold a speed and it downshifts

than

GDE HOT (with a replacement torque converter, 380 ft/lbs of torque on lockup in top gear) you will have a much much better chance of holding that gear.

but the hot tune with the stock TC just bottoms out the dampener springs, and you feel every power stroke: If you keep your foot down, the drive line shock will cause something to break.

I'm running a full torque tune with a factory torque converter. But the torque converter will be next on the list of too do's. Thanks for the help. I believe the Hot tune after my torque converter and a tow tune.
We seem to get away for the weekend trips to the lake. But our three of four times a year it's a long trip. 10 to 15 hours, Next Christmas thinks the key west and that is a long drive to shift back and forth all the way.

The little Jeep just don't have the power with out a little running start. Not trying to race just a little better drive. If u tow a lot the drive means a lot.

IMHO the hot tune isn't for you. Check with gde, but for me I have to have the pedal close to the floor to have the "HOT" kick in, which causes a downshift. But I have the tcm tune so it's locked near 1700 rpm when I get on the pedal. The full torque would work best, get the most torque without over fueling.

_________________


05 CRD Sport Dark Kahki

RRO: Adventure Rack/Rails ** MOPAR: Skids/Renny Flares & 255/75r17 (32.1) BFG M/T on JK wheels ** ARB: Bumper/IPF lights/790/948/shocks ** GDE: TCM/Hot Tune ** ROCKLIZARD: Super Sliders/Komodo Bumper

My Build Thread
US Army Infantry

I bought my CRD to tow my J/24 sailboat. I weighed the boat and trailer on a public scales and found the combo weighs 3985lbs with about a 230lb tounge weight. Well under 5000lbs.

When I tow this rig between 55 and 60mph, I get 20mpg in the CRD.

Notes: getting up and going is easy, but the stopping power of the Jeep feels a little underwhelming. Towing a sailboat like this is also challenging because the center of gravity is so high and there is a lot of windage. The boat itself weighs about 3200 lbs, with about 800 of that in keel.

Now, this didn't work:



The boat and trailer probably weighed around 6200 lbs. Again, the CRD had enough oomph to get going, but stopping was scary. My brother (who was in charge of the operation) said he went about 2 miles down the highway and decided to pull the plug. Don't know if the electric brakes on the trailer worked, but regardless, the trailer is too big for the boat and the boat itself is waaay too far aft.

Anyway, these CRD's fit a small niche really nicely--great torque for towing small to medium-ish boats and still able to drive around a city and find parking. Most gasser SUV's aren't rated above 3,000 pounds so if you want to tow anything meaningful, you've got to step to a truck or a Suburban--overkill, IMHO.

I hope the future brings more of the small SUV's powered by diesel, 'cause at some point the CRD is going to wake up and realize that it's a Chrysler product wrapped around an Italian engine...

_________________
2006 CRD w/99,300 miles
F31 from a previous life
EHM @ 42K, ProVent @ 79K
GDE Eco Tune & TCM @ 46K
Engine mounts replaced @ 55k/93k, Timing Belt @ 90k
Lift Pump @ 97k
OME Lift, 1.5''
Kenwood TM-V71 Ham Radio / Cobra C75WX CB
Surf Racks