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Old 11-26-2012, 11:34 PM   #124
ngabdala
Vortech Supercharged
 
Join Date: Apr 2012
Drives: WRB BRZ 6MT LTD
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Here are some reasons according to Super Sprint that makes their own catless EL Header as to why there is a CEL. I plan on getting a guide from them with some pics if they will supply it to me.

*TO AVOID CEL ERROR:
-The secondary O2 sensor wire must be extended to connect after the cat. A full guide to this procedure is available.
Alternative solutions:
- Deactivation of the secondary O2 sensor through ECU reflash
- Mini-cat (connected between the sensor and the bung on the headers)
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