Chrome Sport exhaust tip question

[Porsche_Ron]

Hi Loren and all,

I had the chrome 4-pipe sport exhaust tips installed on my 2002 Carrera C2 last week and they look great. However as you may know, the pipe leading into the chrome tip has a crimp in it at the bend. Although this crimp looks like a flaw or damage from shipping, it is indeed "designed" this way.

My question (and I have searched the forums without luck) is this: the crimp appears to restrict the airflow over the stainless steel oval tips that I had removed, which doesn't make sense (why would Porsche engineers want to restrict exhaust flow at that point????). Do you know what the purpose is of these crimps to the pipes? Do they negatively affect performance (my impression is that the car has to work harder now for the same performance)? :(

Your input would be greatly appreciated!

Ron.

Edited June 30, 2006 by Porsche_Ron

[0586slb]

A picture would help here Ron. :) Do you think it may have been crimped to make bending the tube easier without it collapsing? I'm guessing because I don't really know what you're talking about.

[Porsche_Ron]

I will post one this afternoon. However I did come across a photo here once and for the life of me could not find it again in spite of my persistent searches through the forums.

[kmayer]

I just purchased those same tail pipes, and while I have no proof, I can't imagine that crimp being enough to effect back preassure in any measurable way.

[Porsche_Ron]

I do think the exhaust sounds a little more aggressive. Perhaps the crimp "tunes" the flow sound???

[Porsche_Ron]

Ok. Here's a picture of the crimp in the exhaust pipe. It appears necessary for the pipe to clear the other section of the exhaust (pipe from the cat to the muffler).

Does this crimp adversely affect the flow of exhaust (increase of back pressure) to the detriment of performance, or am I worrying about nothing?