03-26-2010, 08:34 PM
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#1 (permalink)
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Enthusiast Member
Join Date: Apr 2009
Location: NJ
Posts: 318
Drives: 40th Anniv. 370Z
Rep Power: 1113
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Quote:
Originally Posted by ERZpower
Magnaflow use 409 Stainless, which is two grade lower compare to 304
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Yea, I suspected this as well. I had a magnaflow catback on my accord for about 6 years, and the piping is covered in surface rust. It does not yet appear to be structural, but over time it may become so. Maybe I should try a magnet test, as I think 409 is magnetic while 300 series is not.
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