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Best crom file for mileage

Posted: Sun Dec 18, 2011 11:47 pm
by 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.

RE: Best crom file for mileage

Posted: Wed Dec 28, 2011 10:38 am
by frankl
All will be about the same. I have heard alot of customer say the 65hp tune works best.

RE: Best crom file for mileage

Posted: Wed Dec 28, 2011 4:50 pm
by 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.

RE: Best crom file for mileage

Posted: Wed Dec 28, 2011 4:52 pm
by tuningss
The 65hp Economy Performance Tune is what you would use. Unless the name changed. Post the list of names of the available tunes.

RE: Best crom file for mileage

Posted: Fri Dec 30, 2011 10:58 pm
by 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.

RE: Best crom file for mileage

Posted: Fri Dec 30, 2011 11:38 pm
by 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?