I got my SCT Programmer from Steeda today. When I opened the box, there was a note inside that said "use custom not strategy tune". I did not understand this. When I went to program it, there were approximately 12 settings that I could change. I did not know which ones to change to get the extra performance and "better gas mileage". Did it automatically change certain things when I programmed it or do I have to make those changes manually? Any help is appreciated. Thanks! 2011 Fusion Sport