Kika

I have the Fabspeed sport cats on my 96 C2 coupe. Coupled with motor sound cans, the sound is awesome, not as loud as Fister IIIs, but a great note. I think it is one of the better sounding combinations available. The performance enhancement comes mostly at the top end, from 5500 RPMs up, so if you aren't up in that range, you won't notice as much. I have swapped the exhaust from OEM to the sport cats on several occasions, keeping everything else the same on the car, and with the sport cats, the car is much quicker to redline. With the OEM cat, there is a lessening of response at the top end. I don't have any quantitative data, but the difference is noticeable.

For the record, my motor has RS cams and is running an RS flash done by Steve Weiner on a 97 ECU. Which is also a combination I would highly recommend.

coreseller

I'd love to hear your response to Fabspeed's post / response. I have been very happy with my Fabspeed products and their customer service has been nothing short of fantastic.

BTW......My Butt Dyno definitely felt a difference with FS's X-Pipe and Sport Cats, Have you tried them, or just pissing?

Todynot

Gbos1

Guys what is the cost here for the X-Pipe and Spacers so I don't throw a CEL. Anybody that has them throwing a CEL. Deciding Y/N to install. Thanks!

Holytin

I did not like the sound at all in combination with Fister II's - jut too obnoxious. But that's OK - all about perception. Purchased a used and complete system last year including 200 cell sport cats and cat-bypass pipes and gave it a try. No hp/torque gains for me. Matter of fact, the car felt actually slower...

Sold the system to a fellow Rennlister and I'm perfectly happy the way it is...

Kika

the 993 sport car is $1895 http://www.fabspeed.com/porsche-993-...rt-cat-x-pipe/

and the O2 extenders at $125 each. http://www.fabspeed.com/universal-o2...tic-converter/ the 993 has 4 O2 sensors, but to avoid a CEL, I think only the post cat O2 extenders are necessary.

I haven't been driving my car much since my rebuild and install of the FS sport cats, but I did get a CEL that indicated an ineffective catalyst, I forget the number. It was about a year ago, and I just reset it off, and moved on. My smog isn't due until summer of 2018, so my plan is to monitor and see what happens. I will either go with the extenders, or just throw the OEM Cats back on. I would love to hear the experience of others.

FWIW, FS did a group buy for us about 2 maybe 3 years ago on the Sport Cats. I think there were about 20 RLers that participated, so there should be quite a few here that have experience. (and drive more than I do!)

Dr. Ferdinand

Another very happy Fabspeed customer, I would go as far as saying the Sport Cats coupled my Stage II Fisters is among the top 3 mods on my 98 C4S. Only other mode I'd rate higher is perhaps the PSS10s.

P-daddy

jj99c2

I picked up the x-pipe and sport cats back when we had the group buy and have been happy with them. They sound great and car "feels" like it pulls harder in the upper RPM band.

Gbos1

$1,400 sounds more reasonable. Would have jumped on that.

911F1

Anyone Ceramic coat their Fabspeed x-pipe? I bet some gains could be had with doing so. Ceramic coating could also keep temps down around the timing chain housing covers that are prone to leaking. Or maybe its a bad idea to Ceramic coat a Cat because it needs to get up to a certain temp to work properly. Something to think about.

Analog Theory

Dr. Ferdinand

I didn't do the FabSpeed cats, but did opt for the ceramic coating on my Fister IIs

911F1

Since the Fabspeed has two configurations. Ceramic coat the Cat deletes and piping. When using the Cat portion, keep them uncoated. That might work. It seems like a lot of heat is
being generated from our 993 stock exhaust. Ceramic coating more than just our mufflers has to be a benefit.

Fabspeed Motorsport

If you are running the sport cat x-pipe there is no need to get the O2 Spacers because this will not throw a CEL because you still have Cat's.

Now if you are running a Cat bypass x-pipe you can try the spacers with that pipe. We have had some great success with the catted spacers to deal with the CEL from going with a cat bypass.

On to ceramic coating I would not suggest ceramic coating the catted x-pipe for a couple of reasons.
First, the cats do have to get very hot in order to work properly.
Second, If the ceramic coating is not done properly it could flake. There are many curvaceous on a cat even our sport cats and one venerable spot could really effect your engine.Those flakes could fall off and that would not be great for the engine.

If you would want to ceramic coat the sport cat bypass x-pipe but the is not much benefit to this because it is so free flowing.

We are not against ceramic coating here and recognize many of its benefits. It has to be done properly.