ok im about to install my cat delete amd i was wondering if my exhaust still has a place for the 02 do i need to put the 02 sim on. or is this 02 sim there to trick the ecu that every thing is working properly like the cat. any comment (almost any) would help thanks.

 

The o2 sensor doesnt go in the cat.. its after it....

 

sorry i ment ask some thing else. i figurd it out be researching. and i know the 02 is not on the cat but what i wanted to ask is did i need to install it for every thing to work properly. i know i was going to get a code but would that throw off the stock map and try to correct it self or would the check engine light just come on. i was being lazy and didnt want to put it on tonight but F U C K it might as well do it right the first time. thanks

 

it's on helix test pipe, the 02 sensor bung fix.

 

I dont beleive that it will affect anything other than the code. just tells the dealer or mech that theres a prob with something... i just saudered mine on and its good to go...