I have a 2008 FXSTC and hope I have wisely spent my money today. I bought Vance & Hines Straigt Shot slip On's with the additional quiet baffles (didnt want obnoxious loud), Big Sucker stage 1 and Screamin Eagle Pro Super Tuner. Can anyone tell me what I can expect in HP gain? If any? No Dyno time, just a reprogram. Should be getting installed next week... Thanks for your input...