I have SHOShop y with 2.5" going to the stock split (I know...the rear y split needs to go...). I agree w/ Rara, I don't know if I saw any tq gains, but certainly no loss. The top end however...HOOOOIE!!! The car is certainly not a dog under 4k, too. I was talking w/ cawong11, and I think he's right when he says the SVT is more prone to tq loss than a regular 2.5. I like my 2.5" exhaust.