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Old 05-18-2013, 11:56 AM   #1
Scooby Specialist
Member#: 330488
Join Date: Aug 2012
Chapter/Region: NWIC
Location: PacificNW
03 WRX

Default Straight Pipe in the state of WA

I need to get an emission test soon for my wrx, will I automatically fail the emission test if I have a straight pipe, but no check engine light/codes showing?

Sorry I am not familiar with the rules for emission test in this state.
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Old 05-18-2013, 12:25 PM   #2
Scooby Specialist
Member#: 212898
Join Date: Jun 2009
Chapter/Region: NWIC
Location: Maple Valley, WA
05 CGM STi
WFC #289


No CEL = Pass
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Old 05-18-2013, 12:29 PM   #3
Scooby Newbie
Member#: 225784
Join Date: Oct 2009
Chapter/Region: NWIC
Location: Kirkland
2006 WRX Wagon AW
Kawa Ninja


You'll be fine if there are no CEL's. I had a straight pipe for a couple years and passed emissions what I had it!
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Old 05-18-2013, 12:57 PM   #4
Board junkie
Scooby Specialist
Member#: 276538
Join Date: Mar 2011
Chapter/Region: NWIC
Location: SnoCo
2003 Wrx Wagon


Originally Posted by b00stin View Post
No CEL = Pass
Originally Posted by zigzag801 View Post
You'll be fine if there are no CEL's. I had a straight pipe for a couple years and passed emissions what I had it!
Not entirely true... I had no CEL and I failed too many readiness tests. The guy that helped me go catless just snipped off the EGT probe wires and 02's and used them as "plugs." While the CEL's may be overridden via EMS, you still need the sensors plugged in intact and still functional. I ended up using a 2.2k ohm resistor for the UP pipe and a new bosch 02 sensor with spark de-fowlers for the DP. Then when I went back they couldn't get their dongle to work in my OB2 so they Sniffed it, and it passed.

GL OP, it's not tough using the search feature. There are several old threads on this exact topic.


Last edited by Board junkie; 05-18-2013 at 01:09 PM. Reason: typo
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