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Old 03-06-2013, 08:12 PM   #9
paulpat
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Join Date: Feb 2010
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Quote:
Originally Posted by Uncle Scotty View Post
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OK....i have seen things like this happen after header installs....and it seems that the oils used in manufacturing the header burn when the pipe is installed and foul the front o2 sensor

which is why it is wise to wash out ANY new header out with gas or carb cleaner or whatever...and let it dry...before ya install it
Yeah I did the same when I polished my stock headers. It fouled my O2 sensor. Gave me weird readings then went back to regular
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