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      05-20-2011, 11:50 AM   #13
dnvrdrvr
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Drives: 2013 Santorini E92 M3
Join Date: Jul 2009
Location: Denver, CO

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Quote:
Originally Posted by Zba View Post
Correct, sends O2 into the exhaust stream on a cold start (rich condition) to help burn off excess hydrocarbons (unburned fuel). In it's location above the engine it is exposed to some pretty high temps, so yeah...
Back on topic!
SA confirmed ^. I also got new spark plugs, diff fluid change & an oil change. Car feels great!
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2013 Santorini M3, 2016 328i Alpine White Wagon (Lab hauler), 199x Sapphire M3 (because racecar)
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