I was thinking of installing the SE Stage 1 Air and SE performance Slip on muffs on my new 1200C Sportster. Now I got to tell you I like the sound of it now and it runs great. My question is, am I going to notice enough performance boost to make the expense worth it? I only ride 2 up from time to time, most of the time it's just me and my little rocket. Do I really need more HPs and Torque? It will already go faster than I'm brave enough to try. Any advise would be greatly appreciated.