Mazda Protege5 headers

[Shue Her]

Hey guys, Im thinking about getting some headers for my Fs-de motor. But my question is, will it have an "Check engine light" for removing the Pre cat?

 

[njaremka]

yes, unless you actively do something about it

 

[Balls]

You have two engines? I only bought one header for mine! Yes you will get a CEL unless you do the non-fouler trick.

 

[gino]

Hey guys, Im thinking about getting some headers for my Fs-de motor. But my question is, will it have an "Check engine light" for removing the Pre cat?

Running a 4-2-1 header, no precat. OEM 02 that was before precast goes into bung on header. Have custom exhaust with aftermarket minicat where OEM 2nd cat used to be. Second 02 sensor is in bung on back end of cat body. Bungs were in header and cat when purchased. Easily passes stringent Colorado emissions. Plug non-fouler didn't work for me.

Cost of new minicat and installation around 2 bills.

 

[esnave09]

I got a header back in September when my J-pipe and pre-cat went bad. My EGR bung didn't line up, so I had to get a $.89 black metal cap for it and left the EGR tube behind it. I also did the Non-Fouler trick with my secondary O2 sensor and haven't had a single CEL or code since.

My EGR setup:


My O2 sensor (rusted to hell after just one winter):

 

[polokoy523]

I got a header back in September when my J-pipe and pre-cat went bad. My EGR bung didn't line up, so I had to get a $.89 black metal cap for it and left the EGR tube behind it. I also did the Non-Fouler trick with my secondary O2 sensor and haven't had a single CEL or code since.

My EGR setup:


My O2 sensor (rusted to hell after just one winter):

Hello, where did you buy your headers from (plus s/h)? The ones bought from ebay didn't even came close to fitting.