o2 sensor/ test pipe issues - Mitsubishi Evolution Forums: Mitsubishi Lancer Forum
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Bolt-On Power Mods Intake, exhaust, intake manifold, ignition, fuel system, cooling, etc.

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Old 11-14-2008, 12:02 AM   #1 (permalink)
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o2 sensor/ test pipe issues

Ok so,

I just purchased a 3" TBE w/ DP & TP off ebay for $222 shipped. I am still waiting on the purchase in the mail (bought it 2 days ago), but I noticed in the pic of the test pipe doesn't seem to have a plug for the o2 sensor. Although, there is a plug on the staight pipe that bolts up after it.

Questions:

1) How many o2 sensors are there on the exhaust? 2?

2) Obviously the check engine light will come on... How do I create a plug for the sensor? Drill a hole in the TP and buy a plug from like Ace hardware?

3) How much will all that cost me?

Thanks to anyone with info!!!
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Old 11-14-2008, 07:30 AM   #2 (permalink)
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There are 2 o2 sensors in the exhaust system. One in the 02 housing and one just behind the cat in the cat-back. So your after market DP will not have a 02 bung unless its got a extra one for a wideband o2. i got my o2 extension from gruppe-s.com in the exhaust section. Or you can make yours if you have the time there are many how to's out there. So the only money you need to spend is on a 02 extension or the parts to make one.
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Old 11-14-2008, 07:21 PM   #3 (permalink)
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ok cool thanks for the info! I bought that extension off that site. I'll post back if there are any problems.
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Old 11-14-2008, 07:58 PM   #4 (permalink)
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ok so i was thinking about it some more... so i do have to drill a hole in the actual test pipe right? To screw the o2 extension in?

Sorry for the dumb questions, just not used to the whole fabrication thing...
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Old 11-15-2008, 10:23 AM   #5 (permalink)
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no you will put that extension into the hole for the o2 sensor in your catback then screw the sensor into the extension. its very simple and not drilling is required. If you need more help i can take some pics and send them. there are plenty of exhaust how to's on evom just follow them and you will be good.
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Old 11-15-2008, 01:03 PM   #6 (permalink)
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ok so i registered at the evom site and read some o2 stuff. I understand that I am supposed to put the CEL fix extension on the catback but what happens with the actual Cat sensor? Just let it dangle? how does that work? Because the test pipe has no bung for the sensor like the original cat.
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Old 11-15-2008, 03:07 PM   #7 (permalink)
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You will screw the sensor into the the cel fix and you will be good to go.
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Old 11-15-2008, 10:56 PM   #8 (permalink)
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Siclan, I do appologize for the confusion... You said, " screw the sensor into the the cel fix..." which sensor? The Catalytic converter/ test pipe sensor, or the catback/ clean air sensor? #1 or #2? And if I do that, do I let one just hang under there or what?

My appologies for not understanding! Thank you for helping!!!
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Old 11-16-2008, 08:54 AM   #9 (permalink)
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the only o2 sensor you will be removing during the install. you will not touch the one in the o2 housing right off the turbo unless you bought a aftermarket o2 housing. So the 02 you will remove is right behind your cat. when you install the new catback section there should be a o2 bung on the pipe. screw in the cel fix and then screw the o2 sensor into it. It is the only sensor that gets removed you will see.
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Old 11-16-2008, 12:10 PM   #10 (permalink)
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oooohhhhh! ok! gotcha! I get it now!!! Thank you for helping me!!!
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Old 11-16-2008, 12:12 PM   #11 (permalink)
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no problem post some pics when its done. Also if you have any questions my AIM screen name is siclanevo
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Old 11-16-2008, 07:35 PM   #12 (permalink)
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for sure!!!
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Old 11-17-2008, 05:03 AM   #13 (permalink)
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here you go a great install link for the cat-back, DP and test pipe with pics and tips!
EVO 8 and 9 Performance Parts - EvoMoto.com
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Old 11-17-2008, 09:56 AM   #14 (permalink)
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oh wow those are really helpful!!! thank you!
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