When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
If it is true by what everyone is saying how restrictive the y pipe is in our trucks then how come while you have your exhaust off all the way to the y pipe, why not replace the y also? or is that not the factory "y"?
Its the factory Y, its just not something that the average person is capable of doing. It involves sawing and then fabricating or getting a universal Y pipe to fit. Putting a cat-back on gets rid of a lot of restriction by itself. I wont take my Y pipe off because I dont want to lose any more back pressure.