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      07-08-2009, 02:28 PM   #106
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Drives: '08 E90 M3, '13 Volt, '08 Ody
Join Date: Feb 2007
Location: Woodstock, GA

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Originally Posted by dzenno View Post
i don't like their price when bought new at all i'm being convinced by someone i know that running half/half for a track day wouldn't damage them, true/not?
Will a mix imediately damage, most likely not. But it is still not good to do and can potentially cause issues with the sensors as well as the catalyst.
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