Let's Play "What's that Noise"!

[K.Gaio]

Interesting, Im currently having the same issue...had it up on a lift last week over at a muffler guy I use..mine sounds exactly like yours, we figured it was coming from the header/cats area. Im thinking bad cats myself. I would be interested in hearing what you find out about yours.

Krista

[Brad Roberts]

wow.. does sound like the cat came apart.. but "why" is the question. I'd be in the shops ass the next day telling them to come get the car (100miles)

Do they work on Boxster's regulary? Were there other Boxster's in the shop?

I have exploded cats in the past, but it was do to us playing with launch control



B

[milliemax]

To me, it sounds internal. In fact it sounds serious. Return the car to the mechanic today. Dont' drive it/have it delivered. Stop payment. I hope it is fixable. Also, where was the mike placed for recording ? Max

[crogers106]

Thanks guys! I really do think it's the cats. When the car is turned off, I can bang on the cats with my palm and closely reproduce that same sound. I too am very curious as to why. Just drop a serious chunk of change to get the car ready for driving season and now it sounds awful. I'm afraid the shop is going to tell me it's just a coincidence they went out when they did and I really can't prove otherwise.

Brad, yes they are a German car specialty shop. Mostly BMWs there while I was in. I met the tech that worked on the car & he's owned 3 boxsters and has been through training with Jake Raby & Charles Navarro (that's what he said & I had no reason to doubt). I appreciate your input on this thread!!

[milliemax]

My cats are the same but I do not have that horrible noise . Only a slight rattle on cold start. Gone after warm. Like many others. Good luck.

[crogers106]

After sending the audio clips to the shop, the Porsche tech and the shop foreman believe it's safe to drive. They say that it sounds like either the cats have come apart internally or more likely a weld on the exhaust heat shield has broken loose (since they had the tranny removed to do the IMS and clutch). I fear the worst - that it is the cats - which will be another grand to fix! While I guess I can't blame the shop, it seems like a strange coincidence they happen to give out the day I pick the car up from having all this work done.