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Old 01-08-2020
Jim Brookshire Jim Brookshire is offline
Senior Member
Join Date: Jan 2008
Location: Saluda, NC
Posts: 1,267

With some more space between the muffler and the walls ( I.e. smaller diameter muffler) and no leaks in the exhaust, you don’t need insulation. Insulation, especially adding more, just makes the situation worse. Many examples in WOG have proved it.
Jim Brookshire
2001 LXI
Saluda, NC
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