Join Date: Oct 2010
Location: Toledo,Ia / Chicago,Il
makes sence if you think about it. but im sure there are trucks on the site that has had both 4" and 5" and im also confident in saying that it dont hardly make a difference. So base your decision on exhaust note, not on performance it will provide. IF any itll make egts cooler but again i doubt there will be much difference if your downpipe is stock. Ive never seen EGTs above 1200 degrees. that was pulling my dump trailer with the track steer in it. Dont know what the temp was outside but it was warm mind you, somewhere like 85-95.
11' CC/SB LTZ LML
Stock for now...