Mar 10, 2008 #1 StrokinHarley Full Access Member Joined Dec 22, 2007 Messages 82 Reaction score 0 Location GA i have the stock exhaust on my 05 f250 and i have a cat delete and a muffler delete. but i was wonder if a 4" with just cat delete would be better or the about the same???
i have the stock exhaust on my 05 f250 and i have a cat delete and a muffler delete. but i was wonder if a 4" with just cat delete would be better or the about the same???
Mar 10, 2008 #2 dlonno BeerHunter Joined Nov 18, 2007 Messages 37 Reaction score 0 Location San Diego It would lower your egt's about 200*.