Okay I did a little searching and came back empty-handed. When I was under the car installing various suspension components a few weeks back my friend pointed out to me a section of my exaust , near the middle of the car ahead of the mufflers that was um... crimped. It looked like someone put the pipe in a vice before building the exaust system.

This is an '06 factory installed JCW system and it appears very intentional. His remark was something like "That looks horribly restrictive!" And I agree. Does anyone know why there is a huge crimp in my exaust?

Seems counterproductive.

 

The crimp is so the exhaust will clear a brace on the Cabrio.

 

When the JCW kit became a factory option the crimp in the exhaust began to appear. Aparently it is needed on convertable cars for clearance. I assume that they decided to make one pipe that would fit both. Some people here have cut the restriction out but I don't think there were any big gains.
Steve

 

Mine was purchased and installed prior to factory option... I have the crimp in mine as well

 

None the less, it was still made after the convertibles were released, so that there is only one kit...

 

The crimpless JCW exhaust rules!

 

The JCW exhaust has higher back pressure than the one-ball or the Milltek.
FWIW
http://www.mini2.com/forum/engine-dr...g-results.html

 

Not if you remove the resonator...

http://www.myminiparts.com/proddetai...d=MMJCRE&cat=7

 

Where is the supporting data?

 

In my butt dyno. Not available for download.

 

This is true if one does count the proverbial BUTT DYNO, but not so true in actuality. It will sound better, and will burble (kind of like the GPs) but the improvement is not necessarily in the performance.

I DO NOT have the crimp and I have removed my resonator and I sincerely doubt any exhaust system made coud be better in sound. I haven't heard them all, but I've heard quite a few.

Anyhoo - the crimp was added to make Cabrios a JCW worthy vessel as well.

 

werd 2 yo *****.

Sorry, but putting a crimp in the exhaust does not even come close to making the Cabrio a worthy JCW vessel.

 

So is the consensus that I should delete teh resonator and replace teh crimped section?

 

Yes, that would be teh sex.

 

Only remove the resonator if you want to make it louder.

 

Not just louder. Sweeter.

 

How much louder are we talking?

 

http://www.youtube.com/watch?v=lVYal...elated&search=

 

That's what I'm talkin about. In the words of the (effectively) late MC Hammer, "Proper."

 

Seems nice. Just ordered the MyMini resonator eliminator. Now gotta find a decent shop with some SS pipe to replace the crimped section eh?