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Old 01-31-2004, 05:27 PM   #1
jefersun
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Member#: 37716
Join Date: Jun 2003
Chapter/Region: TXIC
Location: Houston, TX (sugarland, TX)
Vehicle:
2002 ej257 Black WRX

Default no CEL after more mods...?

Hey guys,

so i installed GT Spec gen 2 header with uppipe and then i reset my ecu. For one thing if anyone wonders, there really isnt that big of a gain, if any on the stock turbo because of hte bigger piping but im sure there is with a new turbo. Anyways, before i just had an HKS downpipe, i know it sucks but i like it. With just the downpipe i had a CEL, now with the addition of the header and uppipe, i have no CEL after resetting the ECU, something i did when i just had my downpipe when going to emissions testing. I am happy that its gone, but anyone know why this has happend?

thanks...
deuce...
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Old 01-31-2004, 06:09 PM   #2
MustGoFast
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Blue now w/ 6 fun flavors

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because you reset your ecu and that clears all cel's for the time being...

adventually the catlyst checks will run again and the cel should turn back on.
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Old 01-31-2004, 08:56 PM   #3
jefersun
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2002 ej257 Black WRX

Default

i reset my ecu right after i installed my downpipe, and the CEL came back in a week. after resetting my ECU with the header and uppipe, i haven't had a CEL since the installation a month ago...

so i'm guessing no one knows why...?
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Old 02-01-2004, 03:57 PM   #4
jefersun
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2002 ej257 Black WRX

Default

bump

anyone?
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Old 02-05-2004, 11:22 AM   #5
MustGoFast
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seems odd indeed.. maybe your just lucky.. maybe the car is somehow running lean enough that your ECU reads enough O2 in the pipe.. I can't be sure.
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