I've ordered a new o2 sensor, so hopefully that will help some. About the hoses being wrong, I have no idea about them. I have tried looking at a bunch of different manuals and different sites, but its hard to find anything that deals with the 91 crx with a b18a in it. I will try a few things out, and if I don't have any luck might take it to the honda dealership here and see if they can help me.