Best crom file for mileage

[mauere1]

I have the U7165 with 5 or so crom files and I was wanting to see what you all think is the best file for mileage, I am running the most current and getting 17mpg.

[frankl]

All will be about the same. I have heard alot of customer say the 65hp tune works best.

[rth238]

I have a 2006 6.0L with a diablo trinity. It does not have an economy tune built in for some reason...any suggestions? I want the tune with beset fuel economy sio ive been using extreme but Id really like that economy tune. Please help.

ps. I bought the tuner brand new 2 months ago, i dont know how up to date that isupgrade wise.

[tuningss]

The 65hp Economy Performance Tune is what you would use. Unless the name changed. Post the list of names of the available tunes.

[mauere1]

I have 9r04, 10, 11, 12, and 14 crom files. I was loading all these crom files thinking they get me where I wanted to be yet I found out I had egr cooler problems, oil cooler and hpop issues and since those have been fixed my truck runs great. I am happy with the 9r14 but I was just curious which crom file was the best.

[rth238]

Thanks for the tip but should my tuner come with tune or do I need to install it (65hp economy tune) because it is not one of the current options?