I have never encoutered the dreaded "shutter"...stock/segr or now GDE HOT. I have not done super hard top end runs nor towed with the new tune...so I can not say for sure what will happen. I can say that the drivetrain feels super smooth with this tune...it almost disquises the power increases because it does run very smooth.

***All this said with less than 250 miles on the tune***

The mileage figures made me think the tune is worth if just for the MPG gains. The better driveability and increased power are an added bonus.

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Founder of L.O.S.T.
2006 CRD Sport
Mods: GDE Hot Tune w/ 364#@2000rpm/Air Box /3" Str8 Exhaust/ASFIR Alum Skids/245-75R-16 Cooper STT PRO/OME LIFT w/Clevis & 4 Spring Isos/AirTabs/Rigid 10" S2 LED/4xGuard Ctr Matrix Bumper
Drag Strip:Reac=.1078_60ft=2.224_1/8=10.39@64.8mph_1/4+16.46@80.8mph

I have the 'eco' tune (I think) and I can get the shudder when pulling my trailer under 2000 rpm and the torque converter locked up. Under this condition (heavy load / steady rpm) the engine truly generates its maximum torque and overpowers the torque converter damper. Unloaded, the engine will quickly move out of the damper resonance rpm range by accelerating the vehicle.

I'll wait for the hot tune until I can explain to my wife that I need another torque converter. That will be t/c #4 for me and #3 is running just fine except when towing. If I need to tow, I also have a 3.0L Grand Cherokee.

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2005 CRD Limited Flame Red w/ Renegade rock rails & light bar, AirLift 1000. 225/75R16 MT/R's on cheap black steel wheels, dual MOPAR subwoofers, Ipod kit & seat covers, Samco hoses - totaled and gone. 2008 WK Laredo 3.0L diesel - AirLift 1000, wife won't let me mess with it much. 2013 JK Sahara on order.

Um, I just got a slight shudder this morning in 4th gear cruising at 50 then stepping into it. Maybe my day of reckoning is getting closer.

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2005 CRD Limited Flame Red w/ Renegade rock rails & light bar, AirLift 1000. 225/75R16 MT/R's on cheap black steel wheels, dual MOPAR subwoofers, Ipod kit & seat covers, Samco hoses - totaled and gone. 2008 WK Laredo 3.0L diesel - AirLift 1000, wife won't let me mess with it much. 2013 JK Sahara on order.

One thing I noticed with the Hot tune, it is a lot easier to make a left turn into traffic, the pick up is right there.

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20 year owner of Libby CRD!
2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

Oh I have almost been killed on left turns. Nothing like that lag to make you load your pants as oncoming traffic blares their horns.

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2005 Black KJ Sport CRD,
GDE Full Torque ECO TUNE, GDE Transmission ECO Tune,
Samco British Racing Green Hoses
Build Date 1/05
200k miles.
Original Owner

Unplug your MAF sensor on the airbox and you will see how it is to drive without that dreaded dead spot on acceleration.

On another note...I can get the shudder under hard acceleration in the 50 mph region +/- 5mph. It does make me drive a bit easier, which is a good thing. (24.02mpg on last city stop n' go tank)

_________________
Founder of L.O.S.T.
2006 CRD Sport
Mods: GDE Hot Tune w/ 364#@2000rpm/Air Box /3" Str8 Exhaust/ASFIR Alum Skids/245-75R-16 Cooper STT PRO/OME LIFT w/Clevis & 4 Spring Isos/AirTabs/Rigid 10" S2 LED/4xGuard Ctr Matrix Bumper
Drag Strip:Reac=.1078_60ft=2.224_1/8=10.39@64.8mph_1/4+16.46@80.8mph

I have unplugged the sensor, so I know what you mean. I have it in now until I figure out what I want to do with these other mods people are talking about.

I have been happy with everything up to 75000 miles.

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2005 Black KJ Sport CRD,
GDE Full Torque ECO TUNE, GDE Transmission ECO Tune,
Samco British Racing Green Hoses
Build Date 1/05
200k miles.
Original Owner