My previous GTS had the old Borla cat back with no mufflers right before the exhaust tips. I had belanger headers, metal high flow cats and an 8lb Roe blower. I liked the sound. I now have belanger headers, NO CATS, 10lb Roe blower and the new Borla exhaust with the mufflers at the rear. Too quiet. Has anyone cut the mufflers out of their new Borla system and replaced them with straight pipes and if so how much of a difference did it make? 
