Focus Fanatics - View Single Post - HOW-TO: Mechanical CEL Fix for a Header
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Old 10-19-2008, 01:02 PM   #80
07FocusZx3
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I tried this fix putting my header on yesterday and I am pulling an DTC P0420 catalyst below effiecieny threshold. Did some searching and found this same fix in other forums saying this should take care of it.

The only thing I think might have been done wrong is my choice of drill bit the size had been worn off on it so I don't know exactly what it is but putting a 1/2" wrnech over it there was just a little gap but not much at all and it's the biggest bit I have so next weekend I'll go buy a actual 1/2" bit to see if it takes care of the DTC.

But with as close as the bit is to the 1/2" wrench shouldn't it still work?
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