Originally Posted by jr's3800
Whats with the double wall down pipe? There really isn't a pipe in the pipe is there?
It'* a pipe in a pipe. The one inside is thin walled and only has a lip that holds it in. It slides in and out a little bit. I'll take a pic tonight. I will NOT be proceeding with this process as per the post by Ben. The info crossed our desks and we agreed it would not be beneficial until he got bigger pipes behind it. Of course, if someone wants to send me a spare down pipe I'll try and gut it for you and you can give it a shot. I would strongly suggest heat wrapping it so that you don't heat up the firewall and blower motor housing. It'* my assumption that is the purpose of it. The outer pipe is just to keep it from getting to hot in that spot. Plus heat wrapping keeps the heat in the pipe. Hotter exhaust flows faster doncha know!
P.*. I told Ben wrong. It was actually 25-30rwhp lost with the big into small pipes....