I have a 00 civic EX with a super loud Random Technologies catalytic converter that I'd just like to switch back to stock. Unfortunately, I don't have my original one, but I know someone who's selling an OEM catalytic converter for a 00 civic SI.

Would the B16 catalytic converter work with the D16y8 setup? (By the way I have DC stainless 4-2-1 headers and a Greddy Evo exhaust, if that matters.)

 

ttt

 

the EX and SI cats are identical. Part # 19854 from Honda. As long as the Random Tech was a direct bolt-on piece, you're good to go.

 

Perfect... thank you very much!