2003 Boxster rear end noise

[Pat1USMC]

I just recently made a thread about this. I had the exact same problem with my 2003. Turned out to be the heat shields in both cats. Warranty covers it though, so you can just have the dealer replace both cats.

[fatmike]

I am starting the suspect the exact same issue with my car (see my recent post). My car sounds like you just poured a bowl of rice crispies after you run it for a while.

Does your car smell funny when you ride top-down? I couldn't smell my car, but my wife thought I smelled funny after riding in it...

Its worth asking why you have a dead cat -- what is root cause. I am reading/learning more about this now for my own situation.

By the way, my 7 year old was horrified about the "dead cats".

[fatmike]

Understand that the emissions warranty is 7 years? So if its Cats, your probably covered. I am investigating for my own case now and will post my experiences and findings.

[eomak]

Cool thanks for replies again.Sounds like some kind of porsche part faulty or maybe the car being low some owners before the lastest owner has bottomed out over a speed bump or pot hole in road maybe hitting the exhuast or cats. causeing small bend or something over time the heat starts to break it down causeing the nosie to act up. Just a thought,but hopfuly not related to some kind of engine problem that shows.tells that the engine hasnt been cared for over the years which causes the cats to burn up.

[fatmike]

So, techron & premium gas took care of my issues. Hope you have the same luck.