Rep Power: 0

I'm having a problem the HP racing header and high flow cat. I have three holes for O2 sensors. Two are in the header, one is in the high flow cat. I have two O2 sensors on the car. One goes to the header, the other to the cat. The header is suppose to come with a plug to fit the third hole. I bought mine second hand and it didn't come with the plug. I've been to every auto part store in my town looking for a plug. A 3/8 and 1/2 plug don't fit. Some people suggested screws, but the hole is specially designed for an 02 sensor, so it tapers as it gets deeper. For those people that have installed the HP racing header, what did you use to fill the third 02 sensor hole? And what is the third hole there for anyway?

 
Rep Power: 339

umm we only have 2 o2 sensors.. which model header is it for?
unless you get another o2 sensor and leave it dangling there, i dunno how u can plug it, sounds to me like its made for the lx,dx.. and the high flow cat is universal am i right?

 
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No, its the right header. I have an EX and it only has two 02 sensors. I looked at the post on the DIY HP Racing Header post and I have the same exact header. There's suppose to be a plug that comes with the header. I never received the piece since I bought it second hand!

 
Rep Power: 339

hmmm.. well go complain to the person you bought it from, you can probablly just go to the junkyard and get an o2 sensor and stick it in there without the wires attached...

 
Rep Power: 324

go to a junk yard, pick up a used o2 sensor cheap,and use it as a plug. ,