Ask Dave / Posted 12 months ago / 157 views
I have a 525 hp C13. The muffler (CAT part# 261-6861) is shown as a catalytic muffler. What would happen if I replace it with a standard muffler?
Stay with the same setup you have now. Changing will cause problems with inlet and outlet sensors as well as the engine ECM, resulting in illuminated warning lights.