Yo Fellas,
Just out of curiosity. I received my custom tunes via email this morning and I'm going to reflash tonight. I reflashed my cpu with the out of the box tune from the XCAL3 10 weeks ago on my '05 5.4 Lariat 4x4 on 35's with K&N FIPK GEN2 and dual back Flowmaster 40. It definitely gave some serious power and harder/timed shifting out the box. But what should I expect from the custom tunes from Mike this go around? Is it seriously that much of a difference? What are your thoughts guys?
R

 

you tell us what you think

I know I still like mine 4 years later

 

There is a big difference between canned and custom tunes.

 

The shifts will be 10x better, more firm/smooth/quick, and your top end power will be better. Also the driveability will be mounds better, any drone or weird noises will be gone. your truck will just feel SOLID.