5-10 Grand Master
the cats are a good size and not really that restrictive, besides a little back pressure helps bottom end power, not sure what aftermarket components will be useful. my 535 came with a flowmaster where the cat shoulda been and a glass pack where the muffler shoulda been, it sounded like **** and when i installed a stock headpipe and cat i got more power and smoother accelleration, i used a catback from a e32 750il with 2.5" pipes
all america wants is cold beer warm cat and a place to take a poop with a door on it
Big, Big Time Poster
winfred - with more than 230k miles and a really rusty, but not yet leaky, potentially original, muffler, should I be thinking of replacing the cat?
When I hit the cat (or the cover around it?) it sounds "dead".... in other words, it's like hitting a piece of wood and not a muffler... effect is that, you feel like you're squishing the stuff inside upon the impact; does that make any sense?
5-10 Grand Master
you can always look inside the cats from the resonator end to see if it's solid, if you can hear crap rattling around empty them out and be done with it, that way it looks like it has cats and you pass visual inspections
Originally Posted by Kamil
winfred - with more than 230k miles and a really rusty, but not yet leaky, potentially original, muffler, should I be thinking of replacing the cat?
When I hit the cat (or the cover around it?) it sounds "dead".... in other words, it's like hitting a piece of wood and not a muffler... effect is that, you feel like you're squishing the stuff inside upon the impact; does that make any sense?
all america wants is cold beer warm cat and a place to take a poop with a door on it
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