I have an FG auto, I have heard (well from google) that the XForce can drone with an automatic. Anyone know if that's true or not? I am facing the exact same dilemma, wanting a catback, not sure if DiFillipo, Redback, XForce or HiTech is the way to go. Wanting a nice deep note without sounding like a bogan doing laps with NO drone - preferably a twin system as I like the look but the key is the deep note and lack of drone...