SCT X3 from 5 star tuning... ****s great I dont have the fancy gauges and **** but the tunes are great.. You sure you can tune 5 at once??? I think the 5 means you can do 5 vin unlocks.. I had to get 2 X3s to tune mine and my grandpas trucks..
5 Star Performance is who you want to talk to first. I've only heard great things about Mike and the work that he does. http://www.5startuning.com/5.4L%20V8%20Ford%20F150-F250-F350-E%20Series%20Vans/index.html Also check out Troyer. I haven't dealt with him, but I've heard mostly good things. Troyer Performance
Only difference I know of is the SF3 has canned and custom tunes and X3 is strictly custom.. Thats why I was asking.. But whatever dude.. no need to be a dick about it..
Bully Dog 4 Bank Switch tunes on the fly. On paper I'm 18.65mpg average. Spark plugs? I try to leave it off Extreme cause the people behind me can't see to drive thru or are afraid of the "Lost's Smoke Monster".