Fabspeed Bypass...Worth it??

[skibovr6]

Hello all, I have been researching the fabspeed 2nd cat bypass pipes. I had their tips on my Cayenne. I know they are really expensive but they do have some nice quality. I have a 00 S and currently have a PSE exhaust and an EVOMS intake. I was curious to hear some feedback on the bypass. Those of you who have it is there much difference. I searched Youtube and the videos up dont seem to have changed it that much, but videos dont often catch what it is like in person. I also searched here and found a few chats but nothing major. I am looking for a tad more sound, not a lot just a little raspier. Thanks for any info.

[Johnny Danger]

Deleting the secondary cats will reduce weight, as well as improve exhaust flow . Though, not much change as far as sound is concerned .

[jaykay]

I would think with your PSE set to full by-pass you should get some nice sound in conjunction with the pipes.

I have a custom by-pass muffler with a much of the exhaust by-passing the muffler especially at high rpm, along with the FAB pipes.

The sound is aggressive but nice. On the throttle it has that GT-3 bark and a Ferrari burble, snap crackle off the throttle. It is loud on the throttle but quites down when you maintain throttle position. I would think the PSE would have a similar sound although it has never been quite clear to me what the actual bypass path is.

Mine doesn't let much flow into the muffler to begin with

[Johnny Danger]

With all due respect, the PSE exhaust has nothing to do with the secondary cats as far as sound is concerned . Again, by eliminately the secondaries, one reduces unnecessary weight, along with some back pressure . There might be a slight change in "note", but overall the sound difference is negligible .

[skibovr6]

Thanks so much for the info! I will have to do some more research. It may be something I do this summer.

[ChrisZang]

Originally Posted by Johnny Danger

With all due respect, the PSE exhaust has nothing to do with the secondary cats as far as sound is concerned . Again, by eliminately the secondaries, one reduces unnecessary weight, along with some back pressure . There might be a slight change in "note", but overall the sound difference is negligible .

Amen to that

[j.fro]

skibovr6,
I'm in Charlottesville VA and I've done the Fabspeed pipes along with headers and a Borla muffler (along with many other mods). The car is an 00 S, and it is definitely snappier than stock. If you'd like to hear it and go for a ride, I do most of the Shenandoah PCA events along with many of the VMSC and SCCA autocrosses.
Last year I was at Hershey and Fabspeed had a booth. With a bit of negotiation, I'm sure you could get a deal on the pipes. Are they worth it? I think so. They are significantly lighter than the cats, flow waaay better, and open up the sound nicely. I priced the materials a while back, and to get them built with the same materials using mandrel bends, you'd still spend $300 or so.