So I have had the silencer on my performance pipe for awhile now. The sound difference is obviously there, however I don't think I'm fully understanding what kind of performance I may be losing with this thing on. Maybe what I mean is, are we sort of choking out our motors from the rear by using these? Should I be aware of special tuning differences when using the silencer? I like using it so as to not have to drive so far to run, I just want to have a broad handle on what these do to a motor's performance with prolonged use.