Like i said, flaky as baklava.. Should likely replace them.. No smell/leaks though. As far as the rubber lines from the tank I will put that on the list..crumbling when touched the rust is probably surface rust only.
You do have two rubber lines coming off of the tank that you did not mention you replaced.
Would you consider this more as a "temporary fix"? Or is it a fair supplement for the magnaflow swap.You can also cut the old cat out of the pipe and install a Universal Cat
Is there a specific Universal Cat that I should purchase (size, length, capacity, membrane...etc)
But if I swap out the known defunct cat.. I shouldn't have to run this test, right? Maybe, after the cat swap, I'll test it for assurance reasons...The OP can test back-pressure himself instead of paying someone.
Im going to run a compression test just so I can get that information into the thread in case it is necessary for speculation purposes -- ill be referring to my haynes manual while doing so.