03 6speed Z

after i put test pipes on my car the o2 codes popped up
i thought, no big deal, ill just get the non fowlers

so i did, they already had the 1/2 hole drilled in them and after i put them on correctly the code came back, wtf

please help if you know anything about this

thanks

 

Go under car check (1) both o2 sensor plugs to make sure they are connected. (2) Make sure spark plug foulers are snug tight.

Good luck.