i'm gonna buy some greddy 4-2-1 headers for my 99 dx hatch.

my question is, what do i do withe the o2 sensors? should i extend the first one and use it and let the second one hang?, or extend the second one and let the first one hang?, or should i weld a bung and try to use bothe sensors?

help please.

sorry if it is such a noob question, but i've searched everywhere.

 

the header should come with 2 bungs..

 

1st one of course your primary sensor needs to be plug and then secondary is gonna be short , so you gotta extend the wires for it to plug in the 2nd bung that goes way below under the car and also since you mention a DX hatch, your gonna need a EX cat or a high flo cat since the DX has that ridulous resctive Head/Cat manifold design.

 

thanks for the replies