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Old 01-01-2008, 04:45 PM   #1
94'325is
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Default Gutted uppipe and no CEL

I just gutted my 03' WRX uppipe and I didn't get a CEL from the O2 sensor in the car. I plugged it w/ and bolt and the sensor is sitting in my tool box. Does this sound right to anyone?
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Old 01-01-2008, 05:00 PM   #2
prometheum
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what EM are you running?
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Old 01-01-2008, 05:07 PM   #3
ItalianGuy
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It might take some time for it to come on. I know when I did my uppipe, the CEL didn't come on right away, but after a few hundred miles it did.
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Old 01-01-2008, 05:41 PM   #4
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Be patient young grasshopper...
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Old 01-01-2008, 06:38 PM   #5
94'325is
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Haha thanks guys. I currently have no EM but hopefully will in the next month or so.
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Old 01-01-2008, 06:42 PM   #6
REX8
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A little FYI. That wasn't an 02 sensor you removed.
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Old 01-01-2008, 07:43 PM   #7
WRXislander
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Quote:
Originally Posted by REX8 View Post
A little FYI. That wasn't an 02 sensor you removed.
egt ftw
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Old 01-01-2008, 07:54 PM   #8
94'325is
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I just got done with it and am really tired, so give me a little slack. At least it's done though, right? It feels good to finally have it done and no longer have to worry about it. Thanks for all of the help guys!
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Old 01-01-2008, 09:24 PM   #9
03WRX-WRB
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i gutted mine and never got a CEL code and yeah thats an EGT sensor that you pulled out ive had mine gutted for 5 months
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Old 01-01-2008, 10:27 PM   #10
anthonyrb98
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sometimes it shows up, sometims it doesn't. if it shows up, there's a cheap resistor mod that you can do to prevent it from showing up...
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Old 01-01-2008, 11:15 PM   #11
Nessen
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Impreza WRX STi up pipe o2 senor

the senors is a temp senor not an o2 sensor so it shouldnt set anything off..
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Old 01-01-2008, 11:41 PM   #12
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Quote:
Originally Posted by Nessen View Post
the senors is a temp senor not an o2 sensor so it shouldnt set anything off..
No, not running the EGT usually sets off a CEL. Easily defeatable but still, normally a nice glowing light on the dash!
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Old 01-02-2008, 02:37 AM   #13
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Quote:
Originally Posted by REX8 View Post
No, not running the EGT usually sets off a CEL. Easily defeatable but still, normally a nice glowing light on the dash!
Easily remedied by a resistor or some EM. Mine kicked on while it was still up in the air, then we remembered to put the resistor in place.
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Old 01-02-2008, 02:59 AM   #14
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How long did it end up taking to gut it?
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Old 01-02-2008, 03:04 AM   #15
03WRX-WRB
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Depends on what you have for tools i used an air hammer be very carful we put a hole in my up-pipe from it and had to weld it closed and it took about 30 minutes but by hand maybe like 2 hours or more
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Old 01-02-2008, 03:25 AM   #16
budahrocket
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ive had a tbe and catless uppipe on my '02 for a week now and no CEL's
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Old 01-02-2008, 09:50 AM   #17
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It took a few hundred miles for my CEL to come on after gutting mine.

The resistor fix is super easy and costs about $1.00
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Old 01-02-2008, 10:25 AM   #18
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Quote:
Originally Posted by Brock31 View Post
It took a few hundred miles for my CEL to come on after gutting mine.

The resistor fix is super easy and costs about $1.00
Yeah, that's the way to go. Swing into Radio Shack, spend a dollar, plug her in, and never worry again.
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Old 01-02-2008, 11:07 AM   #19
s42k1
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I put about 1000 miles on my car before the CEL came on.
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Old 01-02-2008, 11:35 AM   #20
94'325is
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Quote:
Originally Posted by pDubs View Post
How long did it end up taking to gut it?
I started it at 1 pm on Mon. and finished at 3 pm Tuesday. Now that includes generous breaks and of course sleeping, but it took about 2 hours to get it out (pulled the manifold and lifted the motor), 6 hours to gut it and then 1.5 hours to put it back in. All in all I'd say it's much easier to already have an uppipe ready to go so you don't have to worry about gutting it at the same time.
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Old 01-02-2008, 01:16 PM   #21
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i thought with 02-03 it would be fine with no uppipe cat, 04+ had the problem. ive got the resistor in the rear o2 sensor (the kid that owned it be4 me had catless exhaust) but i dont have any CEL
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Old 01-06-2008, 02:53 PM   #22
prometheum
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yeah it should only come on when egt's get really high, that typically only happens on a stock car on the highway
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Old 01-06-2008, 06:05 PM   #23
DriftIt
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Quote:
Originally Posted by 94'325is View Post
I started it at 1 pm on Mon. and finished at 3 pm Tuesday. Now that includes generous breaks and of course sleeping, but it took about 2 hours to get it out (pulled the manifold and lifted the motor), 6 hours to gut it and then 1.5 hours to put it back in. All in all I'd say it's much easier to already have an uppipe ready to go so you don't have to worry about gutting it at the same time.
Yup. I have one gutted and polished, ready to go into my '05 as soon as I get my lazy arse around to it. Took about 2 hours to gut it and make sure the inside was spotless.
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