It's so nice to know what the CEL is on for!
After researching, Ive found that the code 1221 which I am getting is the primary O2 sensor and when the code is pushed, it is probably clogged, or broken.
Of course it's clogged with carbon on mine, with no catalytic converters (downside to track pipe #2).
Thought some of you might benefit from that info!
im on my girls lab but hears somethin for that 1221
http://forums.bimmerforums.com/forum...d.php?t=363452
UUC EVO III SSK | M50 Intake Manifold | Conforti 3.5" CAI | AA Software | 3.5" HFM (unplugged)
Fan Delete | Strömung Exhaust | UUC Stg2 Ltw Flywheel | X-Brace | AA Track Pipe | 3.46 Differential
1/4 mile: 13.3@104.2mph; 8.6 in 1/8; 2.04 60' | Best 1/8 mile: 8.3@83mph; 1.81 60'
Dyno: 242rwhp/232rwtq SOLD
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