CEL after corksport exhaust install.

[stcin7]

today i installed my corksprt exhaust and new mounts. i put it on and went for a drive and everything sounded and worked great. then later tonight i noticed my check engine light was on. what could be causing this?

 

[yudkib]

is it catless? did you get it scanned? my guess is youll have to nonfoul the downstream o2...

 

[stcin7]

is it catless? did you get it scanned? my guess is youll have to nonfoul the downstream o2...

yes its catless, and no all my local auto parts stores were closed by the time i realized so ill get it scanned tomorrow. but what does nonfoul the dowstream o2 mean?

 

[yudkib]

http://www.msprotege.com/forum/showthread.php?t=123634664
it limits the exhaust gas circulating around the O2 to the point it generally switches the CEL off.

 

[stcin7]

ohh one of those came with the exhaust but i thought it was incase the bung got damaged or something. ill install it tomorrow thanks for the help.