Does this issue just apply to the D16Y8 engine or the D16Y7 too? My civic(98) has the cat in the manifold.

I've been trying to diagnose a leak which I thought was possibly related to the "a-Pipe" - I had to have a hose clamp put on the heat shield on the "a-pipe" as it is cracked. Now the heat shield is rattling again as well as the sound of a leak. I thought maybe a gasket wore out on either side of the "a-pipe" but it could be the manifold thing mentioned on this thread?

Some recommend getting a Honda "buzz kit" installed?