Should I get the GDE tune?

CRD Sport · **Joined:** Mon Feb 25, 2008 10:42 pm **Posts:** 22

flman wrote:

Just got mine with the ECO tune back today. So far so good. The engine starts much quicker then it ever has, sounds more powerful even at idle. I notice it does not smoke up the garage like it used to. The EVIC is reporting 3 more MPG, and I only drove it around locally, all the while punching the accelerator :twisted:

I can feel it is much more responsive and more powerful. I have never got so much gratification out of spending $550 dollars, and I got so much more power and torque, with out even getting my hands dirty. Now if I can get a similar tune for my 02 TDI? Any one have a recommended tune?

Did you have the SEGR before the tune, or is this compared to stock?

flman · **Posted:** Thu Sep 03, 2009 5:54 am

CRD Sport wrote:

flman wrote:

Just got mine with the ECO tune back today. So far so good. The engine starts much quicker then it ever has, sounds more powerful even at idle. I notice it does not smoke up the garage like it used to. The EVIC is reporting 3 more MPG, and I only drove it around locally, all the while punching the accelerator :twisted:

I can feel it is much more responsive and more powerful. I have never got so much gratification out of spending $550 dollars, and I got so much more power and torque, with out even getting my hands dirty. Now if I can get a similar tune for my 02 TDI? Any one have a recommended tune?

Did you have the SEGR before the tune, or is this compared to stock?

I was running the ORM, did you talk to Keith at GDE? He says the SEGR will not make any difference, I would say the SEGR would give you some performance and economy, but the GDE does this and so much more. I bought a SEGR a week ago, I scouted the Jeep Forums and PM ed any one that was looking for one and sold it in a matter of days. All I can say is the GDE is awsome

flman · **Posted:** Thu Sep 03, 2009 6:08 am

linewarbr wrote:

If they can crack F37, I'll be happier than a pig in. . . well, you know.

I would think the F37 program would be wiped off with the reflash, since that was a castration of the original factory HP and torque that went with the new TC and Pump? My Jeep was too late of a build to need the F37.

Joe Romas · **Posted:** Thu Sep 03, 2009 6:34 am

flman wrote:

linewarbr wrote:

If they can crack F37, I'll be happier than a pig in. . . well, you know.

I would think the F37 program would be wiped off with the reflash, since that was a castration of the original factory HP and torque that went with the new TC and Pump? My Jeep was too late of a build to need the F37.

A little Newb update here :lol:

First very few US crd's came from the factory with F37 as the US production was over before the F37 was released around or after June 06:!:
There were several parts to the F37 program. Those from 11/05 came with the newer TC but were suposed to get the flash part of F37.
Of the ones getting the TC only those where a noise could be heard coming from the TC were supposed to get the newer front pump along with the AC condensor/transcooler :roll:

We have seperate computers for the transmission and engine. F37 was done to both the transmission and engine computers and GDE only reflashes the ECM :lol:

The transmission controler is encrypted :shock:

It's easy to tell if you got the TCM flash part of F37. If your FINAL shift and lockup is around 58 MPH your TCM was not flashed. If it does the final shift at or about 64 MPH them your TCM got the flash.

flman · **Posted:** Thu Sep 03, 2009 7:27 am

I will admit, I do not study the recalls and blah blah stuff so much. Next week I may disappear and be working on a totally new project that has nothing to do with Jeeps or diesels. But I do know, F37 was going to castrate the engine. My under hood HP sticker does not reflect the lowered torque values. Are you saying the TCM decides the torque and HP over the ECM? Thanks for all of the good info about the F37. How do you get these final shifts, foot to the floor or mid way?

BTW my build date is 2-06

Joe Romas · **Posted:** Thu Sep 03, 2009 7:47 am

They work together :!:

The TCM determins shift points and sends a torque reduction signal to the ecm :wink:

That's in addition to the overall torque reduction done to the ECM. My dealer service tech mentioned 10% reduction but that figure has to my knowledge not been disclosed :cry:

The next step is the so called "Euro Torque converter" used in the current diesel powered jeeps along with a GDE tune that totally unleashes our beast :lol:

The current tune seems to "work around" the weak points in our oem tc while producing more power and giving better mpg's :wink:

flman · **Posted:** Thu Sep 03, 2009 8:12 am

Good info about the ecm and tcm communication. Any info on the new TC? Part # and price?

Joe Romas · **Posted:** Thu Sep 03, 2009 8:44 am

flman wrote:

Good info about the ecm and tcm communication. Any info on the new TC? Part # and price?

Part number is in another thread and you'll want the new style front pump/cover assembie

Danoid said it is now the stock replacement for our weak ones but so far no word on a new flash to go with it for the TCM. Price as I recall was about half of the Suncoast one and it has a better "hub" part where the springs and splines are that is the source of the shuddering but still has the plastic stator that Suncoast replaced with a metal one. But the new VM diesel is rated at 400 foot pounds as I recall and ours at least before F37 is/was 296 foot pounds so the plastic must be ok

There is an effort underway to get Chrysler to release a "preformance package" that will contain the TC and flash. We can only hope :lol:

flman · **Posted:** Thu Sep 03, 2009 12:43 pm

Back to the GDE, another thing I notice is the response is instant when you press the accelerator at a cruising speed, no lag or hesitation, sort of like speeding up an electric motor with a potentiometer. The GDE is sweet :!:

ac5501 · **Posted:** Thu Sep 03, 2009 12:43 pm

Joe Romas wrote:

flman wrote:

linewarbr wrote:

If they can crack F37, I'll be happier than a pig in. . . well, you know.

It's easy to tell if you got the TCM flash part of F37. If your FINAL shift and lockup is around 58 MPH your TCM was not flashed. If it does the final shift at or about 64 MPH them your TCM got the flash.

This is interesting, my final shift point is at or about 61mph according to the Jeep speedo. The same speedo that reads about 3mph fast. So..... that would mean that my final shift point is at 58 real mph. Vehicle history indicates the F37 was done on this machine.

I still have the stock OEM tires :shock:

Dare I dream that my TCM has not been flashed

One thing is for sure, I'm not taking the Jeep to the dealer to ask them.

linewarbr · **Posted:** Thu Sep 03, 2009 1:12 pm

My final shift point is 61 mph real (GPS), 64 mph via speedo. Is it possible that your speedo is actually correct? Or have you measured it against mile markers, etc?

ac5501 · **Posted:** Thu Sep 03, 2009 1:34 pm

linewarbr wrote:

My final shift point is 61 mph real (GPS), 64 mph via speedo. Is it possible that your speedo is actually correct? Or have you measured it against mile markers, etc?

It's possible. The last time I checked my speedo it was against one of those radar speed sign things the cops use. It showed me going about 3mph slower then my speedo was saying. However, there was a lot of traffic on the road and it may have been reading another car.

I do know this. The odometer on my Jeep showes 3 miles less per hundred miles then the odometer on our 2004 tracker. I factor this in when computing my mpg. The speedo on the tracker is much closer to the radar sign value then the Jeep is, so I figure the Tracker is the more correct number.

I really need to borrow a GPS unit for about a week so I can validate my speedo, odo, and other things related to my daily driving.

tcoilburner · **Posted:** Thu Sep 03, 2009 2:06 pm

I have had the dealership reset my tire rev. per mile to correct the incorrect reading the speedo had. My crd shifts to 5th lock-up at 61 mph now.

Also I just did the ORM fix until I can afford the GDE tune, and now my evic has been within .5 to 1 mpg off both high and low now?

It used to be 3 to 4 mpg high before I ORM'ed it, but after fixing the speedo.

ac5501 · **Posted:** Thu Sep 03, 2009 2:48 pm

tcoilburner wrote:

I have had the dealership reset my tire rev. per mile to correct the incorrect reading the speedo had. My crd shifts to 5th lock-up at 61 mph now.

Also I just did the ORM fix until I can afford the GDE tune, and now my evic has been within .5 to 1 mpg off both high and low now?

It used to be 3 to 4 mpg high before I ORM'ed it, but after fixing the speedo.

hmm. This indicates to me that my speedo just me be spot on. That is both good and bad.

Good cuz its telling me just how fast I am going.
Bad cuz that would mean the Tracker speedo is off
Bac cuz that could also mean my odo is accurate which means I'm not getting quite the mpg that I thought
Good cuz that means my work drive is a little less then I have thought.
Bad cuz that means I have the F37 TCM Flash.

I guess I'm gonna have to buy a GPS unit at walmart (or some other store with 100% money back return policy) and settle for myself once and for all my Jeep speedo/odo accuracy.

flman · **Posted:** Tue Sep 22, 2009 4:56 pm

Joe Romas wrote:

It's easy to tell if you got the TCM flash part of F37. If your FINAL shift and lockup is around 58 MPH your TCM was not flashed. If it does the final shift at or about 64 MPH them your TCM got the flash.

Is this based on the speedo that is 5 to 6 per hour faster then a GPS unit?

Joe Romas · **Posted:** Tue Sep 22, 2009 6:02 pm

flman wrote:

. Now if I can get a similar tune for my 02 TDI? Any one have a recommended tune?

Jeff from Rocket chip. Stage two is what my son got on his 99.5 jetta and it's very nice :lol:

Less smoke and smell, cures the hot start issue, increases the HP from 90 to 115. Go over to the tdi club and look for a GTG in your neck of the woods and see if Jeff will be there. The stock jetta tdi dual mass clutch and stock injectors will work fine :lol:

http://jsrmonster1.globat.com/

flman · **Posted:** Tue Sep 22, 2009 6:34 pm

Joe Romas wrote:

flman wrote:

. Now if I can get a similar tune for my 02 TDI? Any one have a recommended tune?

Jeff from Rocket chip. Stage two is what my son got on his 99.5 jetta and it's very nice :lol:

Less smoke and smell, cures the hot start issue, increases the HP from 90 to 115. Go over to the tdi club and look for a GTG in your neck of the woods and see if Jeff will be there. The stock jetta tdi dual mass clutch and stock injectors will work fine :lol:

http://jsrmonster1.globat.com/

Ehh, Jetta is going to be sold, once I get my 2nd CRD

Just bought an 06 CRD Sport last week, gonna be something I can I can mod and play in the mud with :!:

Should I get the GDE tune?

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