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My 2001 GT seems to be blowing out a tad bit of smoke upon very heavy throttle. This is happneing when on heavy throttle of 4k and up. I am pulling a service engine light for the drivers side front o2 sensor. Would that cause smoke or is this my newly installed Mac longtube headers?

The smoke is blackish and white mixed

Ryan
 

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do a search on the long tube headers, if I remember correctly there was an issue woth those pulling oil ..or oiling collecting or something..sorry I can't be more specific
 

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Yes, I've also read that the increased scavenging efficiency of the LTs cause increased oil concumption at higher rpms and load.
 
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