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GDE Tune (Green Diesel Tune)

313K views 1K replies 171 participants last post by  Hanskropft 
#1 ·
So... I see there are lots of comments about the GDE Tune but I can't seem to find a thread dedicated to it. Lets start one.

If you have a GDE Tune or a thinking about getting one then this thread is for you. Please stay on subject.

I ordered my tune this morning and I see that it has shipped already. That is pretty fast service so far. I'll keep you posted on how it goes. I also asked Keith at GDE four or five pre-purchase questions. He was fast to reply with answers.

If you have the tune already, you might post some data here and brag a little. Also reveal any problems that may have arose.

Which method did you choose to obtain the tune? Etc, Etc.

I decided to bite the bullet and buy the flash tool. So my bill was $750.00.... ouch. BUT we are going to launch on a 6,000 mile trip. At $4.35+ per gallon of gas, I should make up a portion of the price right there.
We'll see.

The scariest thing about the whole deal is the warranty. Its like... HEY you are messing with your car, if anything goes wrong, it totally on you. Its the same guarantee you get when you install a hack in your computer operating system or your WII Game System. If you hack, its on your back. I hacked my WII so I don't have to insert any disks any more..... great. But then my WII didn't cost me $26,000.

So.... hearing from happy customers is welcome and encouraged. When enough people say, "I did it and it works GREAT." It really helps. So dive in.

:2thumbsup:
 
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#1,132 ·
will be towing my ramcharger this weekend for a lttle trail... it'll be a first with the eco-tune and, if I have time, the airlift air-springs... I'll repost after to let you know how it went!
 
#1,134 ·
Pretty decent, however I don't expect to get that kind of mileage due to aerodynamics. The 6000+ lb load I referred to earlier is a 29 ft. travel trailer, just shy of 5000 lbs. empty plus 35 gal. of water and all the gear. Still around 1000 lbs. under the 7400 lb. tow rating but I'm still thinking I want a pre-turbo egt probe before I tow that with a tune.
 
#1,137 ·
Hey Ahaze. Just a note on tow ratings - All manufacturers quote tow rating based on an otherwise EMPTY vehicle and a 150lb driver. Don't know about you, but I haven't been 150lbs for about 10 years.... nor do I usually travel alone with no other cargo (human or otherwise) in the Jeep with me.

SO, while the Jeep is rated for 7400lbs (4x2) or 7200lbs (4x4), the maximum Gross Combined Vehicle Weight (Jeep + trailer) is only 12, 250lbs according to the owners manual.

Check the sticker on the driver's door sill for your Jeep's GVWR (gross vehicle weight rating - ie you, your passengers, gear, etc to the maximum rated capacity for the Jeep) and subtract that from the GCWR to find out how much you can actually safely tow.

I did this before pulling the trigger on our new 25ft travel trailer. My CRD's GVWR is 6150lbs. Subtracting that from the 12250lb GCWR leave me 6100lbs available for the trailer, fully loaded. Not quite the 7200lb tow rating in the manual.....

My trailer's Gross (loaded) weight is 4800lbs. The CRD tows it like a champ and I've got 1200lbs of "extra" towing capacity under the hood. that;s a comfortable margin for me; some may consider it too much weight to give up, but when I'm towing, I'm also usually hauling some pretty preciuos cargo - my wife and 2 daughters - so I'm happy to err on the side of caution. ;)
 
#1,138 ·
08CanuckCRD said:
Check the sticker on the driver's door sill for your Jeep's GVWR (gross vehicle weight rating - ie you, your passengers, gear, etc to the maximum rated capacity for the Jeep) and subtract that from the GCWR to find out how much you can actually safely tow.
The best way to check actual Payload is to run it across a scale and subtract vehicle curb weight from GVWR. Mods will reduce the allowable capacity if it adds weight.

For instance
-Factory curb weight with 150lb driver is 5500lb -GVWR is 6500lb leaves 1150lb payload capacity -Oversized tires adds 200lbs reduces payload to 950lbs
-Occupants including driver 500lbs leaving 450lb payload capacity
-luggage 150lbs leaving 300lbs of payload capacity
-300lbs is the most your tongue weight can be or you will exceed the GVWR
 
#1,139 ·
I did the GCWR math and I'm legal there, but closer to the limit than I've ever towed before, thus my concern over adding fuel while towing this trailer. It doesn't seem like melting down the engine is a common occurrence though, so I feel a bit better. Wasn't intending to derail this into a towing capacity discussion.
 
#1,140 ·


Here's what I towed last weekend with the GDE eco-tune and airlift air springs (to help the fact that I'm a little overweight...) and it ran great! best mileage ever and it followed my friends without trouble (they where towing TJs with ford f-250s powerstroke, rams with cummins and one with a wk hemi at 70+ mph and up a mountain...) So I'm very pleased qith the tune so far...
 
#1,141 ·
Here's the mileages I got towing a 5,000 pound 6x12 tandem axle enclosed trailer. I towed it from New Orleans to Connecticut. After the first 2 tanks I installed a turbo resonator delete pipe and immediately noticed a difference!

 
#1,143 ·
For the three of you - I know two of you mentioned going up mountains - when I go up mountains and tow (guessing about 4k in trailer weight max) my temp will climb, and after one long haul - the trans over temp actually came on for a bit - how do your temps seem to be? Better with the gde tune or no difference? I am still mulling over putting on a real aux. trans. cooler on my 08. thanks for any input.
 
#1,144 ·
Your overheating seems odd.

I've towed my 7x14 tandem axle fully loaded through rogers pass from Kelowna to Edmonton, Alberta, and never noticed temp issues. The trailer was definitely over 4000 lbs. This was before the GDE tune and it was working pretty hard. Have yet to tow with GDE.

My dad has a stock 07 CRD as well and he has pulled his 88 crew cab dually 4x4 with. the truck weighs ~ 7000 lbs and the 22' flat deck trailer weighs around 3000 lbs. so it was towing roughly 10,000 lbs, probably a bit more, like a champ. and this was through the Okanagan valley, with some decent grades. never dropped below 90 km/h no overheating issues either.

overheating pulling 4000 lbs with one of these doesn't seem right.
 
#1,145 ·
engine temp raised a little, but nothing alarming... Haven't got to put a tranny temp gauge nor a EGT one either... In the plans but not for now... So I can't tell you hard facts other than the engine went a little higher than it's regular temperature on the gauge...
 
#1,147 ·
So what would happen if you ran the dpf delete pipe without the gde tune. I had my pipe put on today but haven't up loaded my tune. I expected on my drive home that my check engine light would come on or possibly even limp mode, but nothing.... I guess it's good but just wondering why this is working the way it is. Either way tomorrow the hot tune gets up loaded.
 
#1,152 ·
The turbo resonator delete does add some MPG gain. When you remove the turbo resonator you can easily see why. I not saying it will be a large amount, but I have seen ~ .3 - .5 mpg gain. I've had customers agree with these results.

I can't really notice any sound difference between the two. I just installed one on a customers Jeep Friday and we both couldn't even notice the sound difference. I installed a DPF delete, turbo resonator delete, and CCV reroute kit.

Caddydaddy, thanks for posting your fuel results, good data to have. Glad you had a good trip.
 
#1,157 ·
Wont this just blow exhaust in to the motor instead of the getting blow-by out of the motor? If i'm not wrong, the exhaust has a much higher pressure that the crankcase which is why the CCV is plumbed in to the intake which would then suck the blow-by gases out of the crankcase.
 
#1,158 ·
Quite the opposite (sort of), although the exhaust is indeed higher pressure, the exhaust is a vacuum in reference to the blow-by location sucking the line down. Both the intake and exhaust are vacuum in reference to the unpressurized (mostly) cavity.

BTW, Tnadanzig, wish I woulda known you were making these kits, I have a plug from shibby(after seeing you made a site, I see your making these now too, good for you man!) for my intake hose and a catch can sitting on the shelf, maybe I'll ebay the catch can and go you're route. What method does your kit connect to the exhaust (do I have to drill tap?). I have one of your dpf pipes that's been hanging out for a new exhaust package, and about to go with an MBRP kit and finally get it on.
 
#1,159 ·
Quite the opposite (sort of), although the exhaust is indeed higher pressure, the exhaust is a vacuum in reference to the blow-by location sucking the line down. Both the intake and exhaust are vacuum in reference to the unpressurized (mostly) cavity.

BTW, Tnadanzig, wish I woulda known you were making these kits, I have a plug from shibby(after seeing you made a site, I see your making these now too, good for you man!) for my intake hose and a catch can sitting on the shelf, maybe I'll ebay the catch can and go you're route. What method does your kit connect to the exhaust (do I have to drill tap?). I have one of your dpf pipes that's been hanging out for a new exhaust package, and about to go with an MBRP kit and finally get it on.
Thanks for that. It makes sense.
 
#1,160 ·
Yes, a small amount to get the stainless fitting into the exhaust.

Wont this just blow exhaust in to the motor instead of the getting blow-by out of the motor? If i'm not wrong, the exhaust has a much higher pressure that the crankcase which is why the CCV is plumbed in to the intake which would then suck the blow-by gases out of the crankcase.
No, as gemiller stated, it actually creates a vacuum in the tube pulling the CCV into the exhaust. You have to install everything correctly, but its pretty easy. It's called the venture effect. As the exhaust passes the fitting it creates a vacuum. With the end open you can put your hand over it and feel the small amount of vacuum.

Installed fitting. Needs to be installed at 45 degree angle.


I figured I needed a website to help with all the questions and easier way to order.
 
#1,163 ·
Any needed tune change for the open down pipe? Wonder if i Should do the down pipe for convenience considering all the other stuff will be off too when I do the mbrp and finally install your dpf delete pipe before I get my gde tune done.
 
#1,165 ·
I just want to say thanks to tnadanzig for the phenomenal looking DPF delete pipe now residing underneath my Jeep, and another huge thanks to Keith at GDE who sent me the required tune the same day I requested it. I wish all my Jeep projects were so easy.
 
#1,166 ·
Lets keep the thank you's rolling. I'm a new member on this forum coming from the **********. About a few months ago, I decided to do the Eco Tune after reading much valuable information on this forum. Coincidently, the day I programmed the ECU, my Jeeps serpintine belt snapped (that's another story).
Back to the tune, I used to get approx. 550 kms per tank with 80% city driving. Now, I getting 730kms per tank with the Eco tune. It's simply amazing.....even my friends who drive MDX's, F150's are shocked at the fuel economy plus the extra power on tap!
Big thanks to the members on this forum with all the info and Keith at GDE for a great product.
 
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