Hi,

I'd also be curious about the rest of the install. Did you get a chance to take pics yet? I'm wondering how far forward from the tailcone (of the airplane) is your pipe? I've seen installations where the builder (usually a beginner) is worried about hot exhaust burning the fiberglass tailcone, so he puts the aft-end of the pipe too far aft in the fuse. With a good healthy inset of the pipe, the fast-moving exhaust can grab some air on the way out and get a draft doing through the fuse.

Still, I think a double-layer (shiny-side-out and crumpled so there are lots of pockets of air between them) of regular ol' aluminum foil is a far better heat insulation for your fuselage than all the ceramic blanket and ceramic paint on earth....