Negatives to GDE tune?

stoutdog · **Posted:** Sat Jan 30, 2010 4:47 pm

flman wrote:

stoutdog wrote:

flman wrote:

And I have heard many times in many forum about CRDs fish tailing real easy, on take off. So either you guys have an egg between you foot and the skinny pedal, or your CRD's are not putting out like they should?

Especially in snowy/icy conditions, I drive like there is an egg down there. Or better yet, like there is a steaming hot cup of coffee on the dash.

:2cents:

Exactly, and in a gasser you would not need to be so careful with the accelerator.

Wouldn't know, never owned a gas vehicle. Ever. :SOMBRERO:

Seriously though, that's just the way I drive. I only gun it when I'm getting on the freeway. I'm not one to race from red light to red light.

flman · **Posted:** Sat Jan 30, 2010 5:05 pm

stoutdog wrote:

Seriously though, that's just the way I drive. I only gun it when I'm getting on the freeway. I'm not one to race from red light to red light.

Same here, I don't race from light to light either, the less I use my brakes the better. Maybe if I drove the CRD every day, I would not hit the pedal as hard as I need to do with the Freightliner? But you know, you don't need to hammer it to make it break em loose either.

canlib · **Posted:** Sat Jan 30, 2010 5:25 pm

I don't want to sidetrack this thread, but I agree the CRD is twitchy in the snow in 2wd, but in full-time 4 its great! It tends to drift through corners and will pull back with a little acceleration. I recently passed a stuck bus on a steep hill in the unplowed curb lane in a foot of slush.

GDE is definitely in my future after the warranty runs out in August and my only question is whether or not I let the teenager in me order the hot tune :roll:

stoutdog · **Posted:** Sat Jan 30, 2010 6:09 pm

flman wrote:

stoutdog wrote:

Seriously though, that's just the way I drive. I only gun it when I'm getting on the freeway. I'm not one to race from red light to red light.

Same here, I don't race from light to light either, the less I use my brakes the better. Maybe if I drove the CRD every day, I would not hit the pedal as hard as I need to do with the Freightliner? But you know, you don't need to hammer it to make it break em loose either.

That like when I used to switch between my 93 Dodge Cummins D250 and my mother's Honda Element. The first 4-5 accelerations I was practically drag racing! :lol:

canlib: If you have the updated TC or the Suncoast TC, then go for it! The TC is the only thing holding me back from doing the same...

flman · **Posted:** Sat Jan 30, 2010 7:16 pm

canlib wrote:

I don't want to sidetrack this thread, but I agree the CRD is twitchy in the snow in 2wd, but in full-time 4 its great! It tends to drift through corners and will pull back with a little acceleration. I recently passed a stuck bus on a steep hill in the unplowed curb lane in a foot of slush.

GDE is definitely in my future after the warranty runs out in August and my only question is whether or not I let the teenager in me order the hot tune :roll:

Go for it, both of my Jeeps shudder, eco or hot. But a little tube of Dr. tranny cured that so far. If I toast a TC, it will be time for a new one, why worry about it?

DOC4444 · **Posted:** Sat Jan 30, 2010 8:04 pm

The reason to worry about it is by the time the TC is trashed enough for the dealer to agree to a warranty replacement, you may have hurt the trans with all the trash from the TC. You may only find out after the warranty has expired.

DOC

flman · **Posted:** Sun Jan 31, 2010 6:31 am

DOC4444 wrote:

The reason to worry about it is by the time the TC is trashed enough for the dealer to agree to a warranty replacement, you may have hurt the trans with all the trash from the TC. You may only find out after the warranty has expired.

DOC

I am not worried about that, I have no warranty, and I can change my own TC.

LibertyCRD · **Posted:** Sun Jan 31, 2010 9:51 am

RedRock wrote:

LibertyCRD wrote:

I sent them an email to ask about all the features.

The tweak for the electric fans to keep the transmission cooler sounds great to me. On my previous CRD, I was known to have 3.5 tons hooked onto the hitch at times. :CAMPING:

And the CRD climbed 6% grades at 55 MPH like it wasn't even back there.

you pulled 7000 pounds in the mountains? Wow. very impressive! I plan to do some more limited mt. towing in the future.... I presume that jeep was upgraded quite a bit??? thanks.

Yes, with my previous CRD (which I bought brand new) I sometimes had right at 7,000 lbs. total weight on the Jeep. Our mountains in the eastern U.S. are not as rugged as the Rocky Mountains....but still I was pretty impressed. A tandem axle 16 ft. flatbed with a modified Tacoma 4x4 on the back looks pretty odd. :ROTFL:

But when I stopped at the Flying J for diesel fuel, people came out into the parking lot to see what was going on. That CRD was BONE STOCK. Didn't even have a EHM or ProVent on it. I had the typical tranny shudder that everybody had, but it never gave me enough trouble to make it worth a new TC.

As far as breaking the tires loose...I find that the gas KJ will do that much easier than the CRD. The CRD has so much torque management, and takes so long to spool up that it's very difficult to take off from a stop and spin the tires. However, in the snow it may be a bit much. According to the carfax, my new CRD was wrecked with 100 miles on the odometer. I obtained the police report, and it looks like the lady driving spun out on her own and hit the curb on a bridge. I would assume the shi**y Goodyear tires combined with not being used to the torque contributed to that accident happening.

I'm very much debating the HOT tune myself. As far as I know, my CRD is bone stock. But I don't really notice the shudder with this one, so perhaps the TC was upgraded already? (I bought this one at 75K miles). Maybe I should just go for the HOT tune. Question: Will you see the same MPG improvement with the HOT tune that you do with the ECO tune, if driving style is the same? Are there other negatives to the HOT tune?

flman · **Posted:** Sun Jan 31, 2010 10:09 am

LibertyCRD wrote:

RedRock wrote:

LibertyCRD wrote:

I'm very much debating the HOT tune myself. As far as I know, my CRD is bone stock. But I don't really notice the shudder with this one, so perhaps the TC was upgraded already? (I bought this one at 75K miles). Maybe I should just go for the HOT tune. Question: Will you see the same MPG improvement with the HOT tune that you do with the ECO tune, if driving style is the same? Are there other negatives to the HOT tune?

Considering you are buying horsepower and torque, the Hot tune is a steal compared to the Eco tune. Go buy a heavy truck, same engine, upgrade the HP and torque and you spend more money for nothing more then the flash. As a CRD owner with both tunes, you can definitely feel the low end torque in the Hot tuned Jeep. It feels very commanding compared to the Eco tune, my wife with little mechanical knowledge, loves how the Hot tuned Jeep gets her into traffic. Mileage should remain the same with both tunes, it all depends on how much you wanna step on the skinny pedal. When I first put in the Hot tune, I was blown away by the acceleration, sort of like Mad Max compared to the Eco tune with a cloud of black smoke out the exhaust. I even managed to get a P0193 that was related to high pressures in the rail. But I had to flog the hell out of it to get such a DTC. I never got the code again, because I did not drive like Mad Max any more :grim:

Here is the output of the DTC stored code:
Freeze Frame
Parameter Description Value
DTC for which Freeze Frame was Stored P0193
Calculated LOAD Value 0.00 %
Engine Coolant Temp -40 °C
Intake Manifold Absolute Pressure 25 kPa
Engine RPM 0 rpm
Vehicle Speed Sensor 0 km/h
Intake Air Temperature -40 °C
Air Flow Rate Mass Air Flow Sensor 0.00 g/s
Fuel Rail Pressure 179200 kPa

Do I like the hot tune? Yes, will I be sending in the Eco ECM in for an upgrade? Yes, as soon as Keith does a major revision and gives us "high idle abilities" :mrgreen:

I will go for the upgrade. And Keith we appreciate your work and will pay for any added features, at least I will :ALONE:

RedRock · **Joined:** Mon Jan 25, 2010 11:59 pm **Posts:** 10

flman wrote:

I will go for the upgrade. And Keith we appreciate your work and will pay for any added features, at least I will :ALONE:

T U R B O

LibertyCRD · **Posted:** Sun Jan 31, 2010 5:51 pm

I'm going to request the HOT tune. Then when the turbo dies I'll get the GDE turbo.

Did you guys see the torque with HOT + turbo?? 400 lb./ft. in a JEEP?? Sick! :shock:

stoutdog · **Posted:** Sun Jan 31, 2010 6:21 pm

LibertyCRD wrote:

I'm going to request the HOT tune. Then when the turbo dies I'll get the GDE turbo.

Did you guys see the torque with HOT + turbo?? 400 lb./ft. in a JEEP?? Sick! :shock:

Pretty awesome, eh? :rockon:

I'm doing the exact opposite... when my turbo dies, I'm getting the GDE turbo, which will force me to spend the $$$ for the new TC that is required for anything but their Eco tune. That is, unless of course my TC starts to shudder...

Negatives to GDE tune?

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