So my 94 GMC Yukon which was having some ignition problems is now running great thanks to everyone's help in this group.
The truck has 130k miles on it, still with the factory exhaust system. The muffler's developed a hole in the last 5k miles or so. Now that it's running right again (or at least better) the exhaust problem is much more noticeable.
Anyway the catalytic converter looks good as does the crossover pipe. But everything from there back looks pretty ugly, hole in the muffler and some nasty looking discolored spots in the pipe.
Anyway any tips on going to a muffler shop and not getting screwed. What should a new factory type muffler and a couple pipes run installed.
Better Business Bureau says that my local muffler shop has had no complaints in the last three years and the place has been there as long as I've lived here, over eight years.
Thanks again for all the past help! -James