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Discussion Starter #1
i just purchased a set of mac longtubes and im wondering what the bung like holes on the front of the headers are for and if i need to plug them or what.

there is one o2 sensor bung by the colectors on each header, and a different little pipe for the egr, and the bungs that i have mentioned i cant figure out what they are for any insite whould be appriciated.
thanks
 

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Hmm, can you take pics? Mine did not come that way. They might of started putting extra o2 bungs on the headers for the automatic cars because you can't put the O2 sensors in the same location as a manual.

Are the bungs threaded like it would take an O2 sensor?
 

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nope the auto's use the same header they relocated the bung for both car's. I bileve that you got a set for the 5.0 with the blow down tube, take them back
 

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Discussion Starter #5
thanks guys i have found that i have the wrong headers i am trying to deel somethin out with houston performance to see if they will make things right ill keep you posted.
 
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