yep i've seen pipe do it also, it was dub. wall pipe , inside went
converter and 3 yrs? i'd still check, if you have a vac. gauge connect
it to manifold vac. if good at idle, raise RPM to about 2-2500 and watch
and see if vac. gauge starts to fall, it's a rough test,but a good indicator
of clogged ex. sys. you just don't know where
