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      12-22-2012, 01:38 PM   #32
FogCityM3
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Drives: M3 (E90)
Join Date: Feb 2012
Location: San Francisco

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Thx, nice to know. Hard to tell from the pics, but is the gold heat tape also on the bottom of the airbox? Have you guys also tested/seen any benefit of wrapping some/parts of the exhaust in exhaust wrap?


Quote:
Originally Posted by JamesClay View Post
Air intake at race speeds - minimal, but a tick here and there helps. The plastic is pretty good and the airflow rate there is quick, so not as big of a deal. The gold stuff is great for radiant heat though - protecting shock canisters from glowing headers, protecting fuel cells from mufflers, etc. We also use a second type of insulation at times that has some air barrier built in that is effective in some other applications.