Originally posted by PBayer
Can someone provide part number for the donaldson muffler offered with the 5" system. It has a baffle inside. That confuses me because 4" straight thru breathes better, so why 5" with a baffle. Not sure about the added restriction. Big exhaust would only tell me that its a donaldson baffled muffler, but couldnt provide a part number. I dont want to add an exhaust the will not benefit sound and performance.
Paul