F00Mustang

I am about to install my Hooker super comp long tubes, and I noticed that there is an extra O2 bung welded into the primary tube of each side. The factory only has 4 O2 sensors that I know of, but including the 2 in the h-pipe, that makes 6.. Please tell me what these other 2 are for, or should I just plug them.

Any other install tips would help

Marauder8

As long as you have 4 sensors (2 before the cat and 2 after), that is all you need.

spyder7724

you may want to check to see if they gave you the right headers. i heard of someone else that got the wrong headers but in the correct box. hooker forgot to give me the O2 extensions so it wouldn't be unheard of to get the wrong parts.

1fast05GT

The Factory H pipe has 3 sensors.

DAVE05GT

If they aren't the wrong headers they may be there to facilitate dyno tuning. If they fit and you plan on tuning I would just plug them.