C15 acert

The freightliners came with a catalytic converter exhaust after 02. I think the exhaust restriction was about 60" of h2o. I have seen guys just knock out the center of the exhaust. But you might not like how much louder it will be. I can't open the image on my phone.

 

Just put a couple m00463 muffs on .

There not real expensive, I think about $120 each. Do it once do it right.
FYI: it's not easy pounding out that honeycomb center in those stock muffs . Do yourself a favor and replace them.

 

Yes, get a new muffler, mine was plugged and bent my turbo shaft while driving down the road.

 

Well whatever, good luck pushing a bar thru it thou.

 

11 year old truck/money pit......?

Exhaust is basic maintenance !