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Old 01-07-2014, 05:47 PM   #1
SkorpionZ
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Okay, so I drive an 06 saabaru. I got rs uels, as well as the tsudo, high flow cat. 2 Questions, 3 holes in the cat....why? I thought there was only 2 o2 sensors, also it came with a "L Shaped CEL fix" What is this? How does it work?
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Old 01-07-2014, 07:36 PM   #2
Rudgers73
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The CEL fix is probably a tube that goes between the secondary O2 sensor and the bung. The second bung can probably just be capped. Some cars have more O2 sensors based on emission requirements in different states
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Old 01-07-2014, 07:44 PM   #3
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Probably there in case you want to stick a wideband in it.
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Old 01-07-2014, 08:54 PM   #4
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There's one pre cat, one right after the cat and then one near the end of the pipe. Which ones should be used for o2s?
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Old 01-08-2014, 12:54 PM   #5
Monstrsubi22
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Your first 02 will be pre cat, you can use either of the further two post cat ports for you second o2; although, with a higher flow exhaust you may want to use the further downstream hole to avoid possible cel.
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Old 01-08-2014, 01:41 PM   #6
SkorpionZ
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Good call, and how would I go about plugging the other hole? Or shoul I get just a a/f gauge? I wouldn't want a wide as I don't think because they're like double the price.
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Old 01-08-2014, 05:31 PM   #7
Omni003k
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If your not getting a wideband, save your money. Narrow bands are useless.
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Old 01-13-2014, 12:17 PM   #8
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You can get a plug online or at any exhaust shop that just screws into the extra port.
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Old 01-13-2014, 04:54 PM   #9
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Quote:
Originally Posted by Monstrsubi22 View Post
You can get a plug online or at any exhaust shop that just screws into the extra port.
This.

Just make sure it doesnt leak (to avoid the annoying PTH PTH PTH PTH sound of an exhaust leak)
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Old 01-13-2014, 06:39 PM   #10
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I think its the same as the oil drain plug
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Old 01-13-2014, 07:58 PM   #11
EdHilario
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The first bung is for your pre-cat O2 (AFR) sensor.
The next one will probably be in the cat and then after the cat.
This will be for your rear cat O2 sensor.
The CEL fix is just a spacer to use for your rear O2.
Since your car only has the two O2 sensors, use the first and third holes and ask your exhaust shop when installing this to plug that middle port.
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Old 01-14-2014, 09:26 AM   #12
SkorpionZ
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Old 01-15-2014, 01:37 PM   #13
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Yep assuming the threads match.
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