Put a big cooler on it and call it good. This is the gauge I ran
Deraile. This is the
remote cooler. The one I added in the front was from them also but I don't remember which. I just accepted the shifting. If you haven't changed the fuel injectors to the 4 hole, that's something you need to do also. Huge difference.
I had bought my TJ because I wanted that wheel base and I was tired of having to reengineer my older jeeps. When I was done debugging it, it worked well for the most part. Again with the "reengineering".
The "go around" for the trans issue is (was) grab the trans and trans computer out of the same year cherokee. Grab a manual trans engine computer out of a TJ. It all drops in. The trans computer will not talk to the engine computer and runs in default mode. In default, it still runs cooler and better. One of the guys in my Jeep club did this and it worked great. It wasn't worth the several thousand to me though.
I sold my TJ Rubicon last year. It had 48k miles.