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Discussion Starter #1
I have done some research on the web to find a programmer that could change the shift points and shift speed, but have not been able to find one.

I saw the Tranzformer which exists for the W5A580 transmission but not for the Jeep Commander CRD.

Any ideas on where to find this?
 

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The CRD has the same trans as the 3.7L and the 6.1L SRT-8; The NAG-1

I don't know about tuners, but aftermarket TCMs, modified valve bodies, and high performance solenoids are available. The Charger/challenger/magnum guys would know more about these.

http://www.jeepcommander.com/forums/showthread.php?t=33970

The v6 5spd auto tranny is actually a Mercedes-Benz trans.

It is also used in the srt8 (6.1L) vehicles.

You can swap the Brown Top Solenoids for the AMG Blue Top solenoids and improve shift speed up and down dramatically.


HOW TO (WK SRT-8)

http://www.cherokeesrt8.com/forums/showthread.php?t=52025

http://www.smallfleetparts.com/AMG-Mercedes-Blue-Top-Solenoids/dp/B009HCCIZW

http://www.smallfleetparts.com/MB-Solenoid-Gasket-Fluid-Chrysler/dp/B009HC5LCE

http://www.lxforums.com/board/showthread.php/301805-Official-winter-icky-and-good-weather-review-of-BLUE-TOPS!!!!!-My-Take-Anyway

Also NAG1 Modified valve body:
http://www.paramountperformanceshop.com/Paramount_Performance_NAG1_Stage_II_Modified_Valve_p/ppns2vb.htm
 

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Discussion Starter #3
Yep, I read that you can change the Solenoids, but from what I understand the same end result can be achieved by programming the TCM for the transmission. Seems easier and completely configurable.

Seems almost too good to be true......

Here is some info:
http://www.zautotech.com/tranzformer.html

But it only lists for Dodge and Chrysler, but I would think it should work since it is the same transmission.

I sent an email to them asking about it. I will update this thread with what I find out.
 

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Yep, I read that you can change the Solenoids, but from what I understand the same end result can be achieved by programming the TCM for the transmission. Seems easier and completely configurable.

Seems almost too good to be true......

Here is some info:
http://www.zautotech.com/tranzformer.html

But it only lists for Dodge and Chrysler, but I would think it should work since it is the same transmission.

I sent an email to them asking about it. I will update this thread with what I find out.
Thats great!Keep us updated
 

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Heard back from Zautotech, and unfortunately the CAM communication differs between models. Not sure what CAM is though....some data bus?

So that was a bummer.

I am suprised that it would differ that much between vehicles from the same main company (Chrysler, Dodge, Jeep).

If you have any ideas, let me know.
 

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CAN NOT CAM, Car Area Network? either way it is CAN bus, there are actually several, hi-speed, CAN-A, CAN-B, etc. I think the commander has 3 CAN Busses.

Yes the protocols differ from vehicle to vehicle, so I would NOT buy something that is suppose to plug into your OBDII "D" connector to talk to a specific component unless your vehicle is specifically listed as being supported, even if it has the same transmission.

Do a search, there was a discussion about the blue top servo valves for the NAG1/W5A580 a while back.

On a guess based off what little I know about how the programming in an electronic trans works, I insisted swapping servo's would NOT do anything to improve performance, something like a reprogrammer would do it.

Several folks disagreed and produced references from Charger and Challenger forums that are using the NAG1/W5A580 trans, stating that the programming did very little for trans performance and the valve bodies and/or blue top servo's did make for much better shifting.

1 actual experience trumps a 1000 experts opinions, I'd look into the blue top servos, multiple people tried them and found improvements in the shifting of the NAG1/W5A580.
 

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CAN NOT CAM, Car Area Network? either way it is CAN bus, there are actually several, hi-speed, CAN-A, CAN-B, etc. I think the commander has 3 CAN Busses.

Yes the protocols differ from vehicle to vehicle, so I would NOT buy something that is suppose to plug into your OBDII "D" connector to talk to a specific component unless your vehicle is specifically listed as being supported, even if it has the same transmission.

Do a search, there was a discussion about the blue top servo valves for the NAG1/W5A580 a while back.

On a guess based off what little I know about how the programming in an electronic trans works, I insisted swapping servo's would NOT do anything to improve performance, something like a reprogrammer would do it.

Several folks disagreed and produced references from Charger and Challenger forums that are using the NAG1/W5A580 trans, stating that the programming did very little for trans performance and the valve bodies and/or blue top servo's did make for much better shifting.

1 actual experience trumps a 1000 experts opinions, I'd look into the blue top servos, multiple people tried them and found improvements in the shifting of the NAG1/W5A580.
Yeah I posted some links to what information I had found regarding this. It appears to be a fairly simple mod, that anyone that feels comfortable opening up a trans should be able to do. 2 solenoids plus fluid costs ($535) about the same as paying a dealership to replace fluids and filters I'll bet.

Heard back from Zautotech, and unfortunately the CAM communication differs between models. Not sure what CAM is though....some data bus?

So that was a bummer.

I am suprised that it would differ that much between vehicles from the same main company (Chrysler, Dodge, Jeep).

If you have any ideas, let me know.
I was fearful that that was the case.
 
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