Discussion Starter · #1 ·
i have a 03 2500 hd 4x4 it's stock was thinking of ungrading the exhaust now and getting a chip later. But don't know if i should go with a 4" turbo back or a 5"turbo back also should i run a muffler. My truck don't have cat on it. I do pull a trailer every weekend for about 150 miles. I seen a kit at rpm outlet that has exhaust,programer and intake thats in my bugget anybody deal with this company.