Headers check engine light?

Good_Old_Maui

Member
:
2003 mazda protege5
So im about to install some aftermarket headers on my protege5 but i hear rumors that installing them causes check engine lights and other probelms does anyone know if its true? Or how i can avoid them
 
Honestly I bought the OBX dealio from Amazon. It's like $7 and it does the same thing as the non foulers, but it's plug and play.

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