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Old Nov 20, 2009, 02:58 PM
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P0133?

Anyone know how to fix it? UR Widemouth Downpipe and custom 3" single exit exhaust. Evo x turbo on Ralliart. Help?!?!?!?!?
Old Nov 20, 2009, 03:29 PM
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how many miles you at and who installed the DP? Might re-check the wiring on o2
Old Nov 20, 2009, 03:33 PM
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18k miles and i installed it. Went fine til Monday and it popped up. I need a fix.
Old Nov 20, 2009, 03:38 PM
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slide under ur evo and run down the downpipe to exhaust shaking to see if any bolts may be loose causing a leak. Did your gaskets look good when you did replacement?
Old Nov 20, 2009, 03:41 PM
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also if you have other mods done to your car, list what you have done
Old Nov 20, 2009, 04:15 PM
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Perrin Cobb Turbo Inlet Hose, UR Short Ram intake w/ cone filter, Glowshift AFR wideband and Boost gauge, boost gauge is T'ed into the BOV-Intake Manifold hose. Thats it really.
Old Nov 20, 2009, 05:58 PM
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How long ago did you flag this code? And was it recently after exhaust work?
It could be that your O2 sensor became contaminated and is now responding slower, or a number of things. If you have access to a scan tool you should look at your fuel trims to determine if it is the O2 sensor to blame or another problem that is causing your O2 to throw a code.

More info please
Old Nov 20, 2009, 06:02 PM
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Exhaust work was done probably in March. Downpipe about a month ago. Never had a problem before. Code popped up Monday.
Old Nov 20, 2009, 06:07 PM
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Check for a vacuum leak, that would be my first guess since this came up randomly. It could be something as small as a pin sized hold in one of your vacuum or intake lines.
Old Nov 20, 2009, 06:12 PM
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02 sensors don't like to be disturbed. I'm going to guess a lazy 02 sensor or bad 02. Could also have a cat going bad or something. Good luck.
Old Nov 20, 2009, 06:20 PM
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Cat going bad? This is the downpipe O2 sensor. The only leak I could think of would be my boost gauge. I got WORKS flash and replaced my boost pill hose with the new one provided from WORKS. I did notice after I installed my boost gauge, last friday, when I drove it after the install, my UICP popped off. Fixed it and hasnt come off. Monday I uploaded my tune from WORKS. Undid my battery cables today and the light went away so maybe that will fix it.
Old Nov 20, 2009, 06:24 PM
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Yea check everything thoroughly and go to your local parts store and get some carb clean and spray it on your suspect leak areas while your car is idling. And if your RPM's rise, that is the spot of the leak.
Old Nov 20, 2009, 08:09 PM
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If not I got a guy willing to sell his off a wrecked X for $150 shipped. Good price?
Old Nov 21, 2009, 10:24 AM
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I dont think you need to be replacing any parts yet. First you need to find the problem before throwing parts at it.
Old Nov 21, 2009, 05:10 PM
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Well drove about 65-70 miles today back and fourth to work and it hasnt come back on. I think it might have come on because I didnt unhook my ground when I installed my intake on Monday.


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