just wondering..
my car is a 1993 civic cx.. has a dx (d15b7) motor with dx ecu running a 4 wire 02 sensor..

will it pass smog with a vx exhaust manifold ?

if so can i just use the 02 sensor im using on my dx header and put it on the vx and use the vx cat converter to pass smog?

ORRRR

can i just buy a cat converter that goes after the dx header and it will pass?

im located in calfornia so yeah :-\

 

 

If the cat is good I don't see why not. A VX cat is better than most others, and the same as the stock cx stuff.