Hey all,

I swapped in a set of Fabspeed-made 200-cell cats for the stock cats that I had behind my current Sharkwerks exhaust.

The sound is considerably louder, as the video below should demonstrate. There's more "rasp" and lower RPM rumble.

In my quest for a "911 GTS" sound at idle and low RPM, this is about as close as it will get. It's great, and really gives the car the aggressive exhaust tone that 911s have had On full throttle, though, this wakes the dead... It really exciting and probably terrifying to people who aren't expecting it.

But there's one downside. If the drone with the Sharwerks and stock cats was a 6/10 (stock being a 4/10), this is an 8/10. The car is comparatively silent at 3000 rpm under part throttle, but at 1800 it's pretty hard to live with if you are going up a long highway-speed hill (like I do every morning for a couple miles).

There's also a really odd chirping/something sound that manifests itself under low throttle around 1800-1900 rpm. I think its the turbo or I haven't buttoned up the exhaust as well as I should.

 

Stay tuned for my next exhaust. Sam has something for me up his sleeve.

 

Crap, the third part of the video should say "Plus 200-cell HJC cats". Damn iMovie.

 

I had the same with my SW exhaust when I first installed.

The engine and exhaust deflect the smallest amounts under various RPMs.

Maybe or maybe not... something in the exhaust is coming in contact at that RPM causing the buzzing sound. Worth a look-see.

I was able to resolve my buzzing/chirping.