hondaciv3

For some who know and for others who don't know non vtec motors in the 96-00 civic don't have a normal exhaust system. most have a header to a cat to the pipe and then a muffler. well in a my car a 96 civic, it goes exhaust manifold a vertical cat, then like a down pipe to the tail pipe. i have been told but a shop you can just bolt up a header and get a race cat and then make changes to the pipe to fit right. i have a few ?'s can you extented a o2 sensor, and has anyone reading this done it? what are the power gains like with a good header and a decent cat?

Agent STFU

You can buy a header specifically for the D16y7 (non-vtec) that extends to the exhaust and has no cat.

hondaciv3

do you mean the d15y7, becouse i think the d16 is the Ex vtec

aw1234dude

Yeah the engine in my 97 civic cx hatch is a D16y7. The cat was located on the lower part of the header like you explained. When I swapped in a b16a2 the headers that came on that met right up to the b-pipe of my apexi n1 catback exhaust system for the stock CX hatch. So what I am going to have to do is take it to a muffler shop and have them cut a section of the b-pipe off to make room for a boltable cat.

cxSOHChatch

you can extend the o2 sensor by cutting the electrical tape up a bit and pullng the wire out further, then just taping them all up again (what i did). the chikara kit comes with extra wires where you can cut the wires and extend them.

hondaciv3

how does a b-series header bolt up to a sohc, i thought they were 2 different headers??

RickChew

If you use an EX header (stock or aftermarket) it will eliminate your cat if it runs to your stock exhaust. (im almost 100% sure on this)

oh yeah, to the post above....he swapped a whole B16 in, not just the exhaust manifold (header) Rick