I'm thinking of buying this and putting it before the cat and extending it and joint it back at the piping after the cat. This is like bypassing the cat. When i want to use the cat i just push that button and it'll be using the cat again and if i push it again it flows pass the cat.. It might give me a better sound for my exhaust. But does it improve gas mileage and performance like they said the produt would give since it bypasses the cat?
Its hard to explain with words but do u see what i'm trying explaining. Any constructive opinions welcomed.