4" Exhaust

[FMWeaver]

Recently traded an '03 for a '04. 5 with stock 4" exhaust. I thought the new truck would sound much better considering the exhaust but there is virtually no difference. Do I need to swap out my stock muffler?

 

[Forrest Nearing]

yes, swap it out with a length of 4" pipe... it'll sound much better. if there's a catalytic converter on it, I'd highly recomend replacing it with pipe too.



Forrest