Please check my post on nov.14 under Duratec performance.Why has no one else gone 2.5 inches throughout like I did.Instead of spending money on a new Y-pipe and low flow Cat get the best low restriction setup my way. No rasp , sounds great and performs even better. BAT ,Sho Shop, ETC. are just scamming you out of money offering systems that are a little better than stock but not as good as my system since my system offers as low restriction as you can get for much less money. Just find a good exhaust shop.
