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      02-27-2016, 01:41 PM   #2
Mike@N54Tuning.com
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Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Location: N54tuning.com

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There should be no heat transfer into the cabin with any catless downpipe. The pipes don't trap any heat as the cats are removed (the cats are a huge heat sink). Unless this is a track car stick with regularly SS finish or choose whichever brand you prefer. There will be very little if any difference between them.

Mike
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