shift kit is a waste of money. Save it for the TC & Installation. The TCU will override the shift kit.

I went to a very reputable local transmission repair firm. The guy there said get the shift kit because it replaces parts that can stand upgrading.
Coastal is who I got the T/C from, they also sold me the shift kit.
The transmission guy asked me to call the shift kit manufacturer to get a question answered.
The way I understand it is the TCU calls the shifts, the transmission does the heavy lifting.
You want the best right? Why skimp on an important upgradeable part?
Your money, your ride, you decide.

After the TC update you should really be asking what transmission tune should I get
Again because the TCM Rules

At the present you have three choices.
Put back to original pre F37 gotten through Sun coast
More shifting features and tc lockup's from GDE
Or leave the less then desirable Chrysler "save the TC" software

Oh by the way make sure ONLY TC+4 fluid is used

Thats why I was asking, Iv heard people say'n the shift kit was awesome and Iv heard people say'n it was crap. I also read that in order for the shift kit to work properly you have to splice some wires or something.

So whats the deal?

I thought the shift kit was good the first time I drove it after installation. Then Mr. TCU figured it out and adjusted. Bottom line is the electronics figured out it was trying to shift harder and adjusted appropriately, I'm not sure how/what it adjusted, but it did its thing. If/when I go down the path of replacing the TC, I will also get the new GDE TCU tune. I'm actually surprised mine hasn't crapped the bed yet with the towing I do.

OK, so let me get this straight..... A new TC(suncoast w/ upgraded springs)+trans go shift kit+Deep Trans Pan+GDE TCU tune = a bad booty trans for a crd? obviously im not going inside or go billet shafts or extra clutches but what i have listed above should make for a nice trans?

In a word, yes. You will lose some ground clearance with that pan though, if that's important to you. Go ahead and install the shift kit if you want, but I would skip installing the resistor. I took the resistor out of mine because it shifted really weird.

I strongly suggest just going with the "euro" TC and the GDE TCM tune (and NOTHING else, except, of course, the GDE HOT ECM tune).

DOC

Both ECM and TCM require a flash I expect GDE can do them both in the jeep but you'll need to ask them

Remember any time you make a weak link stronger a new weak link will show up As for a deeper trans oil pan, GDE claims by keeping the tc locked more the fluid temperature is reduced

Oh, I forgot to mention. the TCM is on the right fender well up by the fire wall and the ECM is on the left fender well by the firewall.

Both possibly can be flashed with the hood closed through the obdii port that's on the lower dash area to the right steering columb .

"euro" TC because:

1. It is the only one that has been proven to be trouble free

With all due respect B.S.

Problems with Suncoast and other Performance Converters have all been traced to BAD FRONT PUMPS AND WRONG FLUID
Go ahead put the wrong fluid into your 545RFE with your Euro and see how it does or don't fix or replace a bad front pump and see how it works.
Don't confuse opinion with the truth.

The Euro converter is what the Stock Converter should have been from day one.
VM recommended the bigger dampener springs for the CRD from day one.
Bean Counter Engineering chose the weaker springs used in the original converter.