Originally Posted by gysnst2
Hmmm, if it has duals already it's not worth it. If it doesn't go for it. But I do not think you are going to gain as much as you think
I have a single. If you look under a truck with a single exhaust you will notice the left (driver side) pipe after the CATS is SMASHED when it runs under the trans and into the Y. That smash takes away horsepower. Creates some back pressure from what it looks like. Therefore the purpose is to eliminate that and gain the horsepower back.