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      11-13-2012, 03:16 PM   #19
chris3g
Private First Class
 
Drives: 2012 E92 M3
Join Date: Jan 2012
Location: NJ

Posts: 189
iTrader: (3)

i drove for about 1000 miles with test pipes before i got my tune (due to installing a supercharger) and i think i got the CEL maybe 3 times during that period. The first one took at least a few hundred miles. It takes no more than 15 seconds to clear it with your smartphone and a $20 OBD>bluetooth adapter, so if i hadn't gone supercharged i would probably just have continued doing that.
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