why do you think your cel was caused by an o2 sensor if you threw a cam position sensor code.
get an OEM one from the dealer.
O2 sensors will never cause sporadic idle (if they do, unplug them, car will run fine without them)
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Hot: 2001 Estoril M Roadster
ZCP 19's michelin supersports, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 18's w310's,
Fun: 2006 YZF-R6, black, ohlins, pazzo, cat delete, vance hines csone, YEC racing tune