I'm getting ready to order a tuner for my truck and noticed some good threads on More Power Tuning but mostly for ecoboost trucks. Mine is a 5.4 3v.. with roush off road exhaust and intake mod..

 

I have a 3V 5.4 and have been very happy with the 5 Star tune. Customer Service is great. It's the only one I have tried so can't comment on the others. Very good info here on the Board.

 

If it helps at all, I've got the same exact exhaust and a gotts mod, and I'm going to use 5Star when I get my SCT soon. The guy that runs 5Star gets the tunes to you faster than just about anyone else, most people are very happy with the tunes, and he's great at answering any questions you have. And he answers emails really quickly as well (usually a few hours)

 

I have the Gotts mod, K&N filter in the stock box and Corsa exhaust with the 5 Star Tune.