All of my dyno testing was done with an ECU that was flashed from dead stock by GDE. When I was thoroughly convinced that this was the way I wanted to go, I sent them my InMotion ECU to reflash. Upon receipt from GDE, it seemed to work fine, but delivered 3-4 MPG less than the one GDE overwrote from OEM.

I sent the former IM unit back to GDE for analysis. They informed me that after extensive review, they could not a single parameter or characteristic that seemed different from the ones they have flashed from unmodified OEM. Now, here's the remarkable part:

They told me that since I like how the one I have now performs better than the reflashed IM, that they would let me keep their "loaner" ECU and they would take my "IM" as an even trade!

(Any other company on the planet would have insisted that there was "nothing wrong" with mine and sent it back to me.)

Amazing........

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

I sent mine in on Monday. Hope I'm as happy as everyone else.

Just heard it's in the mail for delivery tomorrow. They've added two more features. Fixed the gas gauge to be linear and raised the idle speed in 4 low for better crawl performance.

I've got to get mine out to them pretty soon I guess. I want a piece of this!

A linear gas gauge would be good. A linear temp gauge might be even better (hint). Are previous GDE customers eligible for these enhancements at reduced or no cost?

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Matt B.

05 Limited CRD. Bought it new. 112k on the clock now.

GDE Eco-tune, rear differential drain plug (drilled and tapped the pumpkin), transmission pan drain plug, Fumoto oil valve, fuel filler neck restriction removed, front hitch, Hayden fan clutch, Sears P1 battery since 08, Mobil 1 5w40, 5 volt glow plugs, DIY timing belt at 109k

Here's what I got from them:

During the course of our development, we continue to improve upon various areas that we find to further improve upon the customer driving experience. As of Monday the 27th, we released what we call a “V2 Running Change” calibration that takes upon the GDE cal and adds further improvements to enhance the customer’s feedback. This process is similar to the OEM environment where as further refinements are made, they’re released to the customer after subsequent validation and verification. In addition to what you might have read and/or researched about the GDE tune, you’ll notice the following additional enhancements:

· Fuel gauge linearization: The original fuel gauge display was biased towards the full side so that it would remain there longer, giving the customer the false realization that you were hardly using any fuel. We have modified the fuel linearization so that between full and ¼ tank, the gauge will (within a few percent error) display the actual volume in the tank not including the 2 gallon reserve. Hence, if you were to fill up at ¾ tank, it should hold (20gal capacity – 2 gallon reserve) * .25 = ±4.5 gallons. We did this based on customer complaints that the fuel gauge was horribly inaccurate.

· Off-road driveability in 4-LOW: While the T-case is in 4-low, we found that raising the idle speed from 760rpm to 800rpm allowed the vehicle to very slowly climb a parking curb without the use of the accelerator. Based on our testing, this resulted in a much more effortless off-road drive. Additionally, the accel pedal torque map was revised for the 4-low setting to allow for a more linear application of torque while driving in inclement terrain.

· Vehicle driveability governors: This is just a refinement of our previous settings to have the drivetrain “clunk” less during aggressive tip-out maneuvers, especially in 3rd gear lockup.

Came today and I put about 40 miles on it. Very smooth compared to ORM. Gas gauge fix is nice. EVIC is showing numbers I can't believe. Filled up for accurate test.

You'll become a believer

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

Well mine has always done pretty well mileage wise. Honest 27 hwy. The EVIC always read 3 mpg high. I live north of the Springs, about 20 miles with 1000 feet elevation drop. I've reset the EVIC at home and driven into town before, usually read in the low 30s. The return trip, resetting in town, usually was around 24. Today I reset it at home and as I exited I25 it was reading 47. Filled up in town and reset again. Pulled into my driveway showing 37. No way I expect these numbers to be real but something good must be going on.

If you pay shipping for your ECU there and back - I believe that they will indeed add the additional features at no cost I understand.

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05 KJ - Lt Khaki CRD Sport - w/GDE Eco, Franky II, Al's 4.5 Arms, JK Rubi Moabs, Silent Armors, Spidertrax Adapters, Rola Basket
05 TJ - Silver RME Auto with some Stuff

I've gone through 3 tanks of fuel since the GDE. As you can see by my sig, I've averaged 35mpg(click on image for more detail if anyone is interested). So a number like 37 can be very real.

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2005 CRD Midnight Blue
GDE Tune
Moog Ball Joints
No Exhaust Brake

Winter Diesel Summer Diesel

1-800-PIK-A-BIZ
Everyone's toll free number and then some

Wow, very nice and congrats! I assume you are doing mostly hwy driving for each of those tanks?

I've also noted that most folks who get stuck in traffic delays seem to only lose .5-1mpg over the course of a tank. It seems that GDE has REALLY fixed the CRD's idling ability!

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2006 Jeep Liberty CRD, Limited
GDE Eco Tune, GDE TCM Tune, Bauer 203* Tstat, Amsoil EaA 201 Filter, Clean MAP, Samco CAC Hoses, Magnaflow Muffler #12226.
New Mopar Fuel Filter, K&N Filterminder, Fumoto Oil Drain Valve
225/75R16 Hankook Dynapros

Just found this post, any idea how many happy customers GDE has had? I am thinking about doing it, I only live about 30min from them. Maybe I can just bring the ecu to them and they can flash it and I can head home and put it back in. Seems like a good place to deal with.

ANy one not happy with their tune?

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-05 Dark Khaki Limited CRD. GDE ECO tune. In-tank lift pump, Transgo doo doo kit, B&M trans cooler, replaced trans solenoid pack and filters, Newer Michelin tires, Timing belt with all related parts replaced at 110,000miles.

I think the only thing someone might be unhappy with is a little less max power than InMotion. However, GDE will soon have a "hotter" tune available which will cause a stock TC (and apparently some SunCoasts, as well) to shudder like the IM Stage II does. I plan to reflash when I have installed the "Euro" TC and GDE has fully engineered their tune to work seemlessly with that TC.

Also, if you haven't installed SEGR yet, there's no need with the GDE tune.

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

This whole GDE thing sounds really exciting. Sounds like everyone is getting really good results with it.

I seem to recall them getting a bit blasted when they first posted about their new tune by some forum members, saying it was too expensive and unneeded. I'm glad they stuck it out and people chilled a bit and gave them a chance. It's always good to get new options, you never know who's going to come along with something that someday people will say they can't imagine having to do without.

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2005 KJ Renegade
Fabrications for sale: Aluminum Roof Rack (See Page 9)
Aluminum Gas Tank Skid -- Radiator Skid -- Front Strut Shims
Coming Soon: Rear Bumpers with lots of options

yeah I was going to ask about the EGR in that post but I forgot. My EGR is screwed up (CEL is on with EGR code) and I was thinking about the SEGR but seeing as they can mod the EGR seems as if they can fool it too.

What does the GDE do with the EGR, shut it off? I want to shut mine off.

Thanks.

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-05 Dark Khaki Limited CRD. GDE ECO tune. In-tank lift pump, Transgo doo doo kit, B&M trans cooler, replaced trans solenoid pack and filters, Newer Michelin tires, Timing belt with all related parts replaced at 110,000miles.

IIRC, yes. Check out their website and forum as it gives specifics on what their tune does.

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Ryan
2006 Ford F-250 PSD CC FX4
**GONE**
2005 Jeep Liberty CRD
SAMCO Hoses//GDE Tune//PML Trans Pan//TransGo HD Shift Kit//MBRP Exhaust

1986 2R Mustang SVO

I would echo alot of the positive GDE sentiment, especially the customer service and the improvement in manners, however I have not seen the MPG increases that others have, but I had to have the TCM replaced which may have affected the performance as it died a week after getting the GDE so I am undecided about my overall satisfaction.

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2005 Liberty CRD, 245/75R16, OME CRD Springs front, OME HD rear

No need to remove the ECM They can do it through the OBDII port in less time then it takes you to remove it from the jeep Consider me a happy owner

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

Nice! That makes it easy. How do you know this is this how they did yours? thanks.

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-05 Dark Khaki Limited CRD. GDE ECO tune. In-tank lift pump, Transgo doo doo kit, B&M trans cooler, replaced trans solenoid pack and filters, Newer Michelin tires, Timing belt with all related parts replaced at 110,000miles.