Actually, some non-Calif, L-48, 76's did not have smog pumps. I'm one
of those lucky ones - so that's not the problem. It does have EGR,
however. I'll do some investigating about an exhaust leak. When I was
putting on the exhaust system, I broke a stud in the right side exhaust
manifold so I had to remove it. It's possible that there is a leak
now. I did not use a gasket, (per stock and advice of a Corvette
shop). Any good ways to check for leaks? Should I use a gasket?
Thanks for the posts.