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      12-31-2020, 10:14 PM   #7
Billfitz
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Drives: '15 328iX GT
Join Date: Jan 2015
Location: New Hampshire

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The stock exhaust is stainless steel. Most modern exhausts are. Back when exhaust pipes and mufflers were zinc coated steel they only lasted 1/3 as long as they do now. The stock tips are chrome. Even if they didn't suffer from corrosion they'd still need regular cleaning to rid them of carbon deposits.
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