JB Weld worked. No backfiring. Smooth acceleration. Just shows what an exhaust leak in the wrong place can do. I've read good things about JB Weld, so for a fix like this it beats tearing off the whole header AGAIN.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.