Quote:
Originally Posted by Mr_ET
btw I hear a test pipe also gives a code because the ecu will see there is no cat anymore... Can you confirm that Adam?
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The ECU will only throw a code if you do not install the O2 fix with the test pipe. I know the T1R pipe comes with the O2 fix, I don't know about any other brands.
My CEL was not due to the test pipe since I have the O2 fix with my pipe. My CEL is from the barometric pressure sensor throwing a code due to the additional boost. I had it scanned and that was the code for my CEL.