I have a 2000 F-250 PSD. Do I have to run w/ a muffler or can I take it off & run w/ a straightpipe? I've heard rumor on PSD engines need some back pressure.Is this true? I want to achieve better gas mileage,more power, & cooler temps.
First,WELCOME to the site! You will find the answer to almost any question you might have about your truck here.
This site has several different forums that are topic specific. Explore the site and you'll see what I mean. This forum is dedicated to discussions of the site itself. Your question would be best addressed in the 1999 up SuperDuties, Upgrades and After Market forum. Sometime soon, one of our friendly moderators will come along and move this question to that or another forum where you will get the best response to your question.