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Old 03-19-2009, 02:54 PM   #1
teamafx
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Join Date: Nov 2008
Default Question on egt

I know this has been asked a million times. I searched and cant find the exact answer. All I find is to do the resistor mod. I have an aftermarket catless uppipe, I plugged in a brand new egt sensor, and bolted it up. Will this be an issue or do I have to use the resistor fix (want to make sure no cel will come on)
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Old 03-19-2009, 03:01 PM   #2
kellygnsd
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LINK G4 hybrid STi

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Since you have a catless uppipe you have no need for the uppipe EGT probe. Its just one more thing that can become dislodged and destroy your turbo. I recommend you remove it and go with the resistor mod.
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Old 03-19-2009, 03:30 PM   #3
rougeben83
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the probe will go bad anyway from being in a catless UP, just do the resistor mod.
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Old 03-20-2009, 12:36 PM   #4
Furious George
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FWIW resistor mod does not work for me. For years I had no issues with the sensor plug just hanging there. Then all of the sudden I keep getting the P0546 (only when cruising in vacuum on the highway). I did the resistor mod, and it still does not help.

So, in case you end up doing the mod and it does not turn out well, at least you are not alone.
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Old 03-20-2009, 12:48 PM   #5
MIKE DD
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Have you're tuner disable the CEL for you, when you get it tuned.

XPT map has them disabled already
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Old 03-20-2009, 12:54 PM   #6
kellygnsd
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Quote:
Originally Posted by Furious George View Post
FWIW resistor mod does not work for me. For years I had no issues with the sensor plug just hanging there. Then all of the sudden I keep getting the P0546 (only when cruising in vacuum on the highway). I did the resistor mod, and it still does not help.

So, in case you end up doing the mod and it does not turn out well, at least you are not alone.
You either have a harness problem, you used the wrong wattage resistor and it burnt up, or its not inserted in the plug correctly.
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Old 03-20-2009, 08:34 PM   #7
Furious George
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Quote:
Originally Posted by kellygnsd View Post
You either have a harness problem, you used the wrong wattage resistor and it burnt up, or its not inserted in the plug correctly.
I would agree if not for the fact that for 2 years there was absolutely nothing attached to the "car side" of the sensor. Why would a CEL that should have been thrown within the first few drives of unplugging the sensor not come up until years later, and then only on the highway, and usually only after I fill up with a fresh tank of gas?

I have not been able to find anywhere a piece of evidence that says that the ONLY reason one would throw this code is taht the sensor is unplugged. I just keep having this nagging suspicion that the car is trying to tell me something, but I can't figure out what it is.
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