When I go to download the 8r20 version there is also the 8r10 and the 7r84 what are these version? Do I need to download them?

rtprestw wrote:Cole, I would like to try an r20-100 custom tune something closer to r17-100 if one's available. Currently I'm not getting any codes or having issue with r20-100 other than what I've already stated.

Me Too Cole. If this is possible please let me know.

I just recently upgraded from r17 to r20. Here are some thinks I like and don’t like.
I like that it
1. Shifts seem to be firm
2. Lower egt’s when just daily driving on the 100hp
3. No turbo fart.

I don’t like
1. Seems to have less get up and go. I will be pulling my 5th next weekend and ...

Should I update my U7165 to R20? I have R17 right now and I am not having any problems with it, no codes, etc.... So should I update to R20 and if I do what changes can I expect?

rtprestw wrote: I found r17-100 to have the best fuel economy on the highway my main reason for using it. Thanks again for your support and reply. Will be in touch.

I would agree 100% with this statement

I do not get any codes.

This shutter only happens when I am loaded down around that PSI but you are right when I let it kick down it goes away. Does that mean the TC is slipping?

The only time i experience that was under a heavy load going up a mountain with our trailer and DYNO weigthing around ...

I have my 2005 6.0 on the tow tune and going around 65 with the TC locked in 5th gear and going up an incline with about 18-20 lbs of boost the truck starts to shutter. If I let off the throttle just a little bit it goes away. If I step on the throttle and the transmission kicks down it will go away ...

Was wondering if it matters how many times you change programs. Also would it hurt anything if you just left it in tow mode all the time? We pull every weekend and it seems I have to change from economy to tow and then tow to economy. The reason I ask is because tow mode is supposed to shift harder ...

I sure I am being overly cautious but I have couple of questions. I just purchased the predator for the 6.0 diesel and I pull a trailer that weighs around 11000 lbs.
1. If I use the towing tune program will the EGT's get to high?
2. If I had an EGT gauge what would be the highest you should let ...