Question about Megan Racing Exhaust

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Nov 9, 2007 | 07:49 PM

#16

Gernby

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From: CA

The stock mid-pipe is below, and I've circled the secondary O2 sensor locations in red, and the secondary cats in blue. Obviously, the O2 sensers aren't monitoring the secondary cats.

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Question about Megan Racing Exhaust-mid-pipe-stock-3.jpg

Nov 9, 2007 | 07:52 PM

#17

Gernby

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From: CA

BTW, what was surprising about the check engine light. With the sensor removed, it thought the primary cats weren't working.

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