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Old 09-07-2010, 03:52 PM   #9
Scooby Specialist
Member#: 59703
Join Date: Apr 2004
Chapter/Region: VIC
Location: Vancouver
2004 STi
always wrb


Originally Posted by kogs View Post
Sorry, so your saying that with your experience even if you replace the oem up and downpipe with aftermarket ones like I have done I should get a pass?
Yes. For example. I'm running ecutek with a larger Turbo with supporting mods. I reinstalled my OEM up and downpipe and got new O2 sensors and passed. I believe the front sensor helps determine the fuel mixture. So a burnt out one could run you very rich. Causing higher hydro carbon readings.
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