Questions about headers and bypass

[Boxtaboy]

Was thinking about doing the Fabspeed cat bypass pipes on my 01, which has both primary and secondary set of cats. Wondering though- if I get rid of the cats in the rear section and replace with the Fabspeed Cat Bypass pipes, since there are a set of 02 sensors in the rear section as well, wouldn't that set off a CEL light if removed?

[ChrisZang]

Originally Posted by Boxtaboy

Was thinking about doing the Fabspeed cat bypass pipes on my 01, which has both primary and secondary set of cats. Wondering though- if I get rid of the cats in the rear section and replace with the Fabspeed Cat Bypass pipes, since there are a set of 02 sensors in the rear section as well, wouldn't that set off a CEL light if removed?

take a look at where your O2 sensors are and where the cats are on your car and then you have your answer...

[jwade]

Originally Posted by Boxtaboy

Was thinking about doing the Fabspeed cat bypass pipes on my 01, which has both primary and secondary set of cats. Wondering though- if I get rid of the cats in the rear section and replace with the Fabspeed Cat Bypass pipes, since there are a set of 02 sensors in the rear section as well, wouldn't that set off a CEL light if removed?

No it won't set off a CEL if you remove the rear cats and replace with Fabspeed by-pass pipes.

You won't regret your purchase either!!!

[Boxtaboy]

Ok, thanks guys. I presume the rear 02 sensors are located before the secondary cats, and therefore, do not trigger the CEL when the bypass pipes are installed.