Last weekend at an autocross my '05 MCS suddenly became really loud. Took the car to the shop and put it on a lift to see what was broken and found the weld on the cat broken all the way around.

Is this common?

Does anybody have a factory header/downpipe to sell? I would need one that is complete and unmodified because I autocross the car in G Stock.

Any help or tips on replacing it would be appreciated.

Thanks,
Curt

 

while not a problem that I'd think common....

I'd expect any decent muffler shop could fix it either by welding it up and/or fitting a sleeve over the bust depending on where the break is

try the easy route first and visit a local muffler shop

 

This **** just happened to me. Did you get it repaired or did you replace it?