has anyone done a reprogram or flash of tranny computer for some engine braking with the Auto trans.. this tranny has no engine braking going down steep off road grades even w/ 513'sand rubicon t case just not slow enough with out having to use the brakes too much

 

We don't have hills that big in Louisiana!
Good question though.....hill decent aid......

 

You need an AEV pro-cal , if you have an auto trans, It will change you shift points, works great

 

Don't know of any reflash to enhance engine braking.
I have heard from people who say engine braking is great with low axle gears, t-case in low, auto trans in 1st or 2nd. Compare yours to another similarly equipped JK to see what's up with yours.

 

That's why you get the six speed. Autos are easier uphill, and manuals are better downhill. IMHO, of course (Actually, I prefer manuals for both, but I don't want to start THAT argument again)

 

Really? Somebody needs to tell my Jeep that. We had all kinda engine braking going through some of the north Georgia mountains. Of course it works better with the OD off, but even with it on, I had engine braking.

 

There ya go. Like I said.....
But, I was also hearing from people who were on really steep off road inclines, too.

 

It works fine for me on steep hills and when im in 1st and 4lo. Not so good in 4hi. I have 4.10s.

 

Most if not all of the auto's I drive have little to no engine braking until you take it out of overdrive. They are designed that way to give you the best opportunity for good gas mileage. Think about it, do you want it to brake every time you let off the throttle? No, and the engine does not know if you are coasting of going downhill unless it is provided with a tilt switch.

So, take it out of overdrive, on really steep hills drop it down another gear or so.

 

I didnt notice if I've been in overdrive or not something to check out .....