I am looking at the efi with the socal switch. Was going to just put a smart jr on the wifes truck. Think efi would be more beneficial, and I like how it's switch on the fly now. My question is what would you guy's recommend for the tunes? It's an 06 megacab dually auto stock. Already have Fass 150 pump, fixing to get Edge CTS to watch vitals. Tranny is stock and I don't want to smoke it. Which 5 tunes would be best. It's a dd for the wife, and we do some towing (28' enclosed trailer total weight about 12,000 lbs, and also a 15,000 tt) Looking at fuel mileage and a little get up and go without smoking everyone out at intersections. All help would be greatly appreciated.