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YOUR RESEARCHHigh flow catalytic converters?
Leading reported evidence
Run fvd 200 cell cats and sport exhaust
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I am running FVD 200 cell cats and sport exhaust with stock headers.
Leading evidence: 'Run fvd 200 cell cats and sport exhaust' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend keeping the oem headers and doing cats and mufflers' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Recommend keeping the oem headers and doing cats and mufflers
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Suggestion
In 2007, most were recommending keeping the OEM headers and doing cats and mufflers.
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Suggestion · Original poster
I'm currently running an FVD exhaust, it's a tad quiet, thinking of running high flow cats to get better sound and maybe a +1 hp lol.
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Suggestion · Original poster
I'm currently running an FVD exhaust, it's a tad quiet, thinking of running high flow cats to get better sound and maybe a +1 hp lol.
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Suggestion
I�m running a Top Gear X pipe (54mm stock piping diameter) with 200cell cats, FVD Headers, and small resonators I decided to incorporate to a muffler bypass pipe, no actual muffler.
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Suggestion
I�m running a Top Gear X pipe (54mm stock piping diameter) with 200cell cats, FVD Headers, and small resonators I decided to incorporate to a muffler bypass pipe, no actual muffler.
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11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
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Anyone have ones they are running and like? I'm currently running an FVD exhaust, it's a tad quiet, thinking of running high flow cats to get better sound and maybe a +1 hp lol.
Thanks
I just had Soul Performance Sports Cats added to my 03 4s which has factory sports exhaust. Definitely adds a nice and noticeable tone to the lower rpms, and when the factory sports exhaust kicks in it amplifies that tone as well. No complaints at all.
I have 200cell from TopGear. From UK, and inexpensive, but they DO throw a CEL. I had to install O2 spacers. Not happy about that.
Otherwise they are well made and do add some nice exhaust noise.
But in retrospect, I would have gone a different direction.
I�m running a Top Gear X pipe (54mm stock piping diameter) with 200cell cats, FVD Headers, and small resonators I decided to incorporate to a muffler bypass pipe, no actual muffler. They definitely amplify the sound a lot, wake up the car a bit, and save a ton of weight. I did this all with intake mods IPD plenum GT3 TB and a retune. Depending on how loud you would like to go, you could consider a set up like this. There�s a clip on YouTube with a 996 GT3 with an M&M race exhaust, I believe it has 100 cell cats and a larger resonator, my car sounds surprisingly quite similar even with the M96 3.4 engine. If you browse FVDs website, they also offer an M&M exhaust for our cars that can have 100/200 cell cats and a large resonator. I would�ve bought that setup if I knew it was available vs doing my own.
No cels with mine either after almost 2 yrs. If I were ever to go catless this system intrigues me
https://www.fvd.net/us-en/RES9960500...m-headers.html
FVD makes some very good stuff. I have had my 200 cell cats and sport muffler since 2007, and it is still working great. But I do know that I am on borrowed time most likely with the cats. Would like to get one more year out of them which will give me enough time to figure out my exhaust set-up. Quite a few more choices at FVD and the industry in general. Seems that header technology may have been refined a bit. In 2007, most were recommending keeping the OEM headers and doing cats and mufflers.
I also remember years back-hearing to always stick with the stock headers, and focus on the cats, and free flow muffler for sound. FVD, Fabspeed, Soul performance, and the top gear headers look identical to some of the other mentioned too. I’d be willing to say no power is lost with these brands, and maybe a touch more is gained way up in the rpm range. Also, the above products look to all have excellent flanges, merge collectors, properly bent equal length tuning. It would be pretty cool, to pair those FVD headers, with that catless system in the link above. Without starting a debate, it also comes in 100 and 200 cell catted versions. Maybe the 100 cells would be a great in between and closest to a catless, with less tq loss?
I�m hoping someone does too. The closets thing I currently have to it, are the 200 cell x pipe resonators, no mufflers and the FVD headers. Seat of pants is definitely a little better. I�d also love to know what that FVD system sounds like with their incorporated larger resonators and 100 cell cats. Their X Pipe cross section looks excellent for scavenging too.
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