Its mostly going to affect the tone of the exhaust, I have run both H and X on the same HCI and Blower with 11psi. the H is a deeper sound but the X gives more of a sports car sound for lack of better words.
Its mostly going to affect the tone of the exhaust, I have run both H and X on the same HCI and Blower with 11psi. the H is a deeper sound but the X gives more of a sports car sound for lack of better words.