Tow tune

[BrownieNpadre]

Just traded in my 2500 hemi for a 2500 Cummins Laramie last week. Turns out to my pleasant surprise it was already deleted! Try to decide if I should spend the money on tunes?

I don’t do a lot of daily driving since I work from home, however will be doing some long haul with my 30’ travel trailer. My buddy just got a eco fuel tune and is getting some crazy good # ( @ 70 mph mind you).

Guess my question is has anyone found a tow tune that they have seen a decent MPG improvement to get better range out of the 31 gallon tank?

 

[Rockcrawlindude]

I would assume it’s already tuned in order to run the way it is. I would say if it works, leave it alone. This is just my humble opinion.

 

[flan]

Try to figure out what it has for a tune and go from there.

 

[AH64ID]

Try to figure out what it has for a tune and go from there.

My thoughts exactly.

 

[H3LZSN1P3R]

Find out what tuning its running and go from there. A low power tune is going to be the tow tune. I would also be sure it has trans tuning or the 68RFE will not last running an engine tune and no trans tune.

Higher power tunes will net better MPG 99% of the time while towing you will need to run lower power tunes to keep the trans together and the EGTs down

 

[BrownieNpadre]

Looking at the widow sticker my truck shows a 68RFET trans is that the same as the 68RFE?

 

[AH64ID]

Looking at the widow sticker my truck shows a 68RFET trans is that the same as the 69RFE?

There isn’t a 69RFE, you have a 68RFE.

 

[BrownieNpadre]

There isn’t a 69RFE, you have a 68RFE.

 

[BrownieNpadre]

I fat fingered it. Is the 68RFET (as listed on window sticker ) same as what is referred to as 68RFE

 

[AH64ID]

Yes, same transmission.

 

[H3LZSN1P3R]

I fat fingered it. Is the 68RFET (as listed on window sticker ) same as what is referred to as 68RFE

The T is likely a typo