ONLY if you cant control your foot! Youre in charge of the vehicle, not the other way around.

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2006 KJ CRD Ltd - Suncoast, GDE Eco, EGR Delete, After market T-Stat, Skid Row skids, V6 airbox, 2.5" Turbo back
2005 KJ CRD Sport-Suncoast, Transco, GDE Hot-GDE Trans, EGR Delete, Skid Row skids, V6 airbox, 2.5" Turbo back, After market S-Stat
1987 Suzuki LWB Samurai -diesel powered, custom 4 link coil suspension 38.5 SX Swampers

We towed our 5000lb trailer on one weekend trip with the factory tune, but the pulling power up hills was not quite there (couldn't keep 45mph up one highway grade). We then got the Inmotion tune. The pulling power on the next camping trip was fantastic. After the third trip (second trip with the tune), I noticed that the dipstick was pushed up out of the tube and an oily mist had sprayed upward out of the dipstick tube. The turbocharger failure and replacement was a few months after that. After seeing the dipstick get pushed out due to crankcase pressure, I retired the CRD from trailer towing duty and used my truck instead.

I'm going to stop short of drawing any firm conclusions from that, other to say that anything can fail when stressed beyond its designed limits.

- Chris

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Used to own:
2006 CRD Sport
Suncoast TC, Transgo shift kit, Inmotion, ORM, EHM, Magnaflow SS exhaust, Fumoto valve, EVIC added, Hensley TruControl brake controller, Pirelli Scorpion ATR LR-D in spring/summer/fall, FIA winter front and Blizzaks in winter

I just purchased a 2006 CRD with 8500 miles. None of the recalls have been done. From what I gather in this thread, I need to have the dealer reflash and do the TC recall and reprograming. Then I can go with the GDE reprogram. Correct?

Lastly, if I get the GDE, what happens when I get my annual inspection and emmisions test? WIll the vehicle fail with the GDE program?

Thanks,
DUke

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2006 Liberty CRD, stock for now
2007 Grand Cherokee 3.0 diesel
81 Rabbit PU, diesel with BAE turbo, 60mpg's!
96 Motorhome with GM6.5TD and propane injection

I'd like my vehicle to stay within design limits no matter what I do with it. I'd hate to go "wooohooo" then "ooops", or on the other hand have EGTs climb too high and limit the life of the valves or the turbo.

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'05 Liberty CRD B100, SEGR - SOLD

'01 Beetle TDi B100, EGR delete
'83 Mercedes 240D B100, no EGR

--- SEGR Builder ---

No way will it fail emissions. Does the '06 have a TC recall?

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'05 Liberty CRD B100, SEGR - SOLD

'01 Beetle TDi B100, EGR delete
'83 Mercedes 240D B100, no EGR

--- SEGR Builder ---

X2

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06 CRD

It might depend on the build date. My '06 was built in May '06 and the only recall I had to have was the F31. F37 is the recall for computer reflash to detuning the engine and adjusting the shift points. F31 was to encourage he engine control computer to talk to third party code readers. I think mine was F37'ed from the factory, so yours might be too.

There is a lot of misunderstanding about f37
First it was NOT A RECALL, just a customer satisfaction bulliten. So if your out of warranty it might not be covered now.
99% of all US CRD's were built before the release of F37 in late summer or fall of 2006 after US production of the CRD's stopped. The copy of instructions I have are dated December 2006.
There were a few stragglers as they finished up production.
F37 was a two part bulleten depending on the date of manufacture. A different TC was used in production beginning in November 05 meaning:
Those built before November 05 got both engine and transmission computers flashed and a different style torque converter.
Those built from November 05 and on only got the flashes.
Additionally for those getting a replacement TC IF the tech could detect a rattle coming from the TC they also got a new transmission front pump and transmission/AC condensor unit.
There was a related crippling flash around June 06 that preceeded f37 that caused those vehicles to not communicate with third party scanners and F31 was released to correct that. So if you did or didn't get F31 depends on if you got the pre f37 flash.

I hope this helps.
Joe

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

Get a second engine controller, put the GDE flash in that one. Flip back before the test.

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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.

I already have a second ECU, and fully plan on doing that. I want to be able to A/B the tunes, but I figure that I will be very happy with a 5mpg+ bump. I'm a little hesitant b/c of the cost and the fact they aren't completely eliminating the EGR...

But here is a question for the folks at GDE: In addition to lowering the idle a little when in drive, reducing the pull at lights... Can you eliminate the Limp Mode function completely? I don't mind if the engine bogs b/c of a lack of fuel flow, but if the computer *thinks* there is a problem and kills the performance... My last car (VW TDI) had almost gotten me killed at least 5 times b/c of a buggy MAF sensor. Nothing wrong with the car, but it insisted there was something catastrophic.

I sent my ECU in Monday morning, GDE received it on Tuesday and turned it back out in less than 3-hours. I just got done testing it for the first time, I am ecstatic. The street manners are fantastic, drove it for about 1-hour in town and out onto the beach. Very smooth idle and acceleration, I've never had a shortage of power, so that is hard to say. I can't wait to see how it does in the mileage department. GDE have excellent customer service, and are very Pro-military (for those that care, I know a lot of military members in LOST). More to come as I use mine...

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2005 Liberty CRD, GDE, Samco, Delphi Lift Pump, 3" Catback, AERO Turbine muffler, OME HD Lift, Treadwright MTR's 245 75 16's, Detours Backbone, Ramsey REP 9000, Amsoil Everything
In my garage needing put on Snorkel

If your state/ county uses an OBD II scanner to determine emissions pass/fail, then you should be fine, as the GDE tune resets the ECU parameters. If the emissions test is based on OBD II, then it is pulling info from the ECU, which will tell it that everything is fine.

My parish (county, here in Louisiana) does an emissions test, but apparently not for diesels. I plugged my MAF back in and cleared the code before going to the inspection station, and the guy there just opened the hood, stared at my running engine for about 2 minutes straight, then slapped a sticker on and told me I was good. When I had gas vehicles before, they always plugged in an OBD II scanner, and put my gas cap on a machine to check that it was keeping vapors inside the tank. This time, with the CRD, I just had to pass visual and brake inspection.

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In this war of lines, so many have been crossed. Where will it all stop?

2006 Deep Beryl Green CRD Sport *SOLD 1/22/12*
Provent, V6 Airbox, Fumoto, Samcos, GDE ECO & TCM Tune, Euro JK TC, Magnaflow Catback
245/70/16 Destination A/T's
Boiler's Radiator Skid Plate
Jeepin' By Al 2.5 inch Adjust-A-Strut Lift, JBA Gen 4.5 UCA's (6/5/10)

I think your initial desription very accurate, had this tune installed about 2 weeks ago - also am quite pleased with results. And it seems to continue to improve over the next week (at least on my 05). More power, marked improvement on smoothness on trans shifts, increase in hwy fuel economy, much better tip in off idle, and better idle. This is what I imagine the factory software should have been in the first place.

X2 it shouldn't fail...

Although in NY Inspection it is safety only, not an emissions test, so no worries here..

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2005 Liberty CRD, GDE, Samco, Delphi Lift Pump, 3" Catback, AERO Turbine muffler, OME HD Lift, Treadwright MTR's 245 75 16's, Detours Backbone, Ramsey REP 9000, Amsoil Everything
In my garage needing put on Snorkel

Well, drove the CRD from dealer home today 200 miles it ran like a champ!
The CARFAX report lists 2 recalls one of them the F37 so I'm assuming this vehicle needs it. Is there a place online I can put in the VIN and check for sure? Car was built 8/05.

As for the GDE, I plan on getting a second ECU and send that out for programming. I bought this vehicle for pure mileage, so the GDE seems to be the best bet for that. Can't wait to see what everyone is getting after their flash.

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2006 Liberty CRD, stock for now
2007 Grand Cherokee 3.0 diesel
81 Rabbit PU, diesel with BAE turbo, 60mpg's!
96 Motorhome with GM6.5TD and propane injection

Don't let them crastrate your CRD's TCM with f37 F37 modifies both your ECM and TCM and so far there's no solution for a castrated TCM Find a used TCM and let them castrate that and then put your original one back in. Your production date indicates you have/had the failure prone torque converter

You can go online to the jeep site and key in your vin and get the recall information

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

Don't take your jeep in for the F37. Just thank the diesel gods that you found one without it and send your ECU to GDE. If you want, get a beefier torque converter one day.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

Um, you still need the newer torque converter/pump.

I got lucky. The lazy dealer didn't touch my trans...

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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.

OK then, let's say I don't do the F37 and just wait for the TC to fail. At that point, I can have the ex warranty cover it free, providing the TC dies before I reach 50k. If GDE does the reprogram, will they put the F37 code in there so when eventually I do take it to the dealer, they won't reprogram the GDE out? Also will the GDE tune cause the pre-recall TC to fail earlier? That would be a good thing.

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2006 Liberty CRD, stock for now
2007 Grand Cherokee 3.0 diesel
81 Rabbit PU, diesel with BAE turbo, 60mpg's!
96 Motorhome with GM6.5TD and propane injection

Yes, keep your non F37 TCM pristine. I did discover that checking the VIN on a spare TCM at jeep.com isn't always an accurate indication of the code level. I bought a spare TCM when I saw Chrysler going down the tubes in 2008, just to have spare parts. A check of the VIN on jeep.com showed it as being F37 updated. When I checked it out in my CRD with the Equus obd reader, to my great surprise, it was not F37'd at all. It was the same code level revision I started out with in my original CRD, ending in AF instead of AI or AJ. Somewhere a dealer/technician recorded this vehicle VIN as flashed when it was not.

When I installed it, sure enough, the shift points are back to pre F37. Nice to have it lockup at 55 mph once again. Now that I've said that, if 14 people rush out and buy used F37'd TCM's at a junkyard, it's still buyer beware. I just bought it to have a spare TCM. The result was a bonus. At least there is still a chance to get one that doesn't have the higher shift points if you have a TC that can handle it without issues.

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2005 LTD CRD RB1 NAV/Htd Leather seats/Amsoil EA filters
SunCoast Mega Trans & Billet TC/PML pan/Aux cooler
Fuel cooler/Lift Pump/10um Pri/Racor R490 2um Sec Fuel Filters
IronMan Lift/Shocks/Provent/Moog ball joints/ V6 Airbox/Fan/Hayden
Cobalt Boost/EGT/Oil/Trans/Volt gauges/Aeroturbine 2525
Yeti Hot Tune/Odessey 65/Samco's/Michelin Defenders