Y7 Question.if I bought a stainless eBay header with holes for the two sensors would it still pass emission test for inspection?

 

Like we even have a clue where you live. And have you ever bothered to look under the hood of your car?

 

I put the motor in my car.i did have my blindfold on though.was wondering if the headers replacing the cat would through a code.

 

THROW a code. T-H-R-O-W. You want to know if it will THROW a code. Which is what you should have asked in the first post.

You may have put the engine in the car but you might be missing how it works with those sensors. Specifically, the second sensor looks for the efficiency of the catalyst which I've explained at least three times this week. You don't have a cat? Guess what happens?

 

THROW a code.i meant THROW a code .obviously I meant THROW a code.i have no idea how the catalyst system works. I assumed with no cat the code will be THROWN. Just asking
Thanks for your help captain catalyst.

 

Obviously.

 

Being a smartass isn't going to ingratiate yourself to anyone, and isn't going to get you any help.

We don't know where you live, so we can't tell you if you'll pass inspection with it. That said, if you just put the O2 sensors in the two holes in the new header, you most likely will throw a CEL, and it most likely will be a P0420 (catalyst below efficiency). To avoid this, you need to extend the primary O2 sensor and install it at the bottom of the header, install an EX-style catalytic converter between the header and B pipe, and extend and install the secondary O2 sensor behind the new cat.

 

Thread fails to comply with the base rules for Tech threads in this forum. Please see rules sticky at the top of this forum.

Also of note, searching Google may prove more beneficial for your purposes.