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Old 03-17-2009, 02:27 PM   #7
SubiWRX04
Scooby Newbie
 
Member#: 196617
Join Date: Dec 2008
Chapter/Region: MWSOC
Location: Grand Blanc, MI
Vehicle:
2004 Impreza WRX
WRB

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Quote:
Originally Posted by the suicidal eggroll View Post
"lean" meaning what? 11.0? 12.0? 13.0?
The front o2 sensor wouldn't correct for it anyway, under boost you're in open loop, which means the afr readings don't affect the fueling.
the front O2 is never exceeding approx 14.7 (i've seen 11.0 ~ 14.7) - except when off throttle/engine braking.

The rear O2 is reading lean on the gauge - which is a 0 to 0.9 v signal. So I am not sure what the AFR is based on this info.
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