430 with Hyper-Flow cats, looking for feedback?

I put FabSpeed hyper-flow cats and tips on my car and it is considerably louder.
It appears to perform better but it might be the sound.

 

Scott -

I'll tell you this: I have them on the shelf @ Ricambi, and they'd be in your hands by the end of the week. If you buy them and absolutely hate them, send 'em back for a full refund.

I'd prefer you have the professionally installed to make sure they're sealed correctly, but if you've worked on your car before, you should have no trouble. There are plenty of qualified installers in your area. I can recommend a few if you're seeking an independent shop with HyperFlow experience.

Feel free to call us (336-499-2500) if you have any questions. Several members on the board can provide feedback about the sound, throttle response, and build quality.

Regards,
Daniel

 

I also have Fabspeed cats and tips on my car and they are definitely louder. From a seat of the pants perspective, while horsepower might be a bit better at upper revs, I think there is a noticeable loss of low-end torque compared to stock. Did the same to my Stradale and also had the same loss of torque feel (again, seat of the pants). Probably need an ECU reflash to maximize benefits of different cats.
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Oh, my eyes are bleeding after seeing your car.
Tackyness is just off the scale.

 

Call me unsophisticated, but I actually like the look of his car. I'm not sure what seems tacky about it, but I'm sorry you feel that way. Just remember what mommy said, if you can't say anything nice...

P.S.- Just noticed you have 5 posts... I'm no veteran obviously, but I don't think that yet entitles you to an opinion.

 

yeah, 5 posts on his 4th or 5th user name. Do a search for his username under the advanced panel and you'll see he has signed up multiple times - probably because the admins keep giving him the boot. He's an ****** who never has anything nice to say about anything... just ignore him. He's a complete prick...

Ray
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Here he goes again. Please explain to me why he is not banned yet. Nothing but negative posting.

 

I can't speak to the 430 per se, but I have hyper flows on my 360 (with a tubi) and like the sound level. Maybe a touch loud, but you quickly get used to it. My car sounds very nice.. sort of like a jet turbine wine. At higher RPM's it's medium-loud.

I have some videos on youtube if you want to hear, although the little camera I used doesn't really capture the sound too much.

http://www.youtube.com/profile_videos?user=ray5961

Ray

 

There seem to be conflicting reports about the effects of hyperflows. And there are SO many repeat posts on this subject, full of confusion. So, let me summarize what I've put together.

First, I know of NO reported dyno results that show HP or TQ gains from Hyperflows on a 430. The same applies to Fabspeed and Larinia sports cats reported. SHAME on Hyperflow, Fabspeed and Larinni for letting its potential customers wander around in fog!

Second, there are dyno results that show gains of about 36HP and30 ft/lbs of TQ on a 360CS by Hyperflow, PLUS an independent pre/post test by a nay-sayer who conceeds that Hyperflow yields about 30HP and 27 ft/lbs of TQ on a 360 CS. Again, there are NO Fabsepped or Larini sporst cats dyno test results reported. SHAME on you Fabspeed and Larini!

Third, there IS increased sound and resonance from Hyperflows, Fabspeed and Larini sports cats. On my CS, for example, the noise in my garage is 30% louder, which is a tad embarrasing, but seems reduced on the road, and then gives away to the already hugely bansheewail of the CS exhaust about 4500rpms in race mode, or 5500 rpms in normal mode.

Fourth, there IS a weight saving from installing the sports cats, about 50% lighter, or 15lbs, which means something in CS world.

Finally, and this is an IMPORTANT point. There just might be reduced low end torque as reported by Thusly and 720 (who has 2 stradales). And, for the reason I'm going to give, that reduced low end torque might be ALL THROUGH the RPM band on a 360, maybe on a 430 as well, but NOT on a CS. The reason is this: UNLESS the sports cats are combined with an aftermarket exhaust, the reduced backpressure would have no where to go. BUT on the CS, the vacuum operated exhaust values completely open, like cat bypass valves, thus giving the sports cats FULL performance realization above 4500 rpms in race mode, 5500 rpms in normal mode. (Note to Thusly: I'm not sure you're right but I too feel NO HP/TQ gains in my CS at low rpms, but feel I do feel more rage coming on about 4500 rpms. Try it out for yourself.)

Two hypotheses:

First, you willl NEVER see the purported HP and TQ gains in a 360 modena because the exhaust bypass valves don't open, the OEM cannister exhaust defeats the sport cat advantage. This may apply to a 430 as well. That is probably the reason Hyperflow, Fabspeed and Larini have NEVER published a dyno on a regular 360 to advertise HP/TQ gains. Again, shame on them for hiding behind OUR viel of ignorance.

Second, you WILL see the purported HP and TQ gains in a360CS above 4500 rpms in race mode and 5500 rpms in normal mode because the vacuum operated exhaust valves fully open, mimicing cat bypass pipes.

Finally, let me say that some of my insights come from Porsche world, where, unlike Ferrari world, owners tend to be consumed by and experienced all sorts of aftermarket mods. On my 993 twin turbo, for example, its a 'no brainer' that installing a racing exhaust (which mine has) w/o a complementary aftermarket exhaust just cancels out the HP/TQ gains of the racing exhaust (read cat bypass pipes or 100 cell cats).

Oh, I fogot, the sports cats, all shiny in chrome look nice for awhile, until they get heated up and burnt orange. Maybe that's a good reason to pay $3K to put them in a 430.

 

Do you have an audio clip to listen to? I'm thinking of swapping them out also

 

Have to generally agree with all of Shawsan's comments. All this "seat of the pants" info hardly makes up for the lack of support/documentation/testing by the cat manufacturers. Seeing hp and torque curves throughout the rev range with sport cats, with and without exhaust valve openings would certainly help people decide instead of various lame posting from people like me about their seat of the pants experiences

FWIW - I have the exhaust bypass valves open all the time on the CS. There may be some hp/tq gains, but they are certainly not profound. As for the 430, I have the same; bypass valves are open all the time. My comments as to "feel" are based on a few comparison drives - 430 with fabspeed cats and exhaust bypass open compared to 430 with stock exhaust. There is definitely a feeling of loss of torque with the fabspeed cats at the low rev range (<4,000 or so). As to the CS, 720 may want to chime in, as he drove my car and compared it to his two CS's which are stock. In fact, I just removed the CS cats and brought the car back to stock with just open valves. (The cats are for sale BTW.) Perhaps the CS and 430 actually need back-pressure (ala stock cats) to help with lower end torque????

Also have to agree with the Porsche comments; I had installed a fabspeed sport exhaust on my 996 twin turbo; it actually provided greater low end torque than the Ruf, stock or Europipe exhasts, but power felt like it fell off a cliff after about 4,000 rpm. Not to mention that the resonnance was unbearable. I have a Europipe on my 996 GT-2 and it seems to provide the best "compromise" of better low end torque and hp throughout the rev range without the Fabspeed resonnance. Then again, quite a different story with exhausts, cats and twin turbo'd cars.

And Shawsan is absolutely correct as to what cats look like pre and post install - beautiful out of the box, and not so much once installed

 

I normally drive in Sport mode. I leave for work in the Summer at 6AM and I have to put it in Rain/Slippery Mode after my neighbor said she heard me leave every day(she wasn't complaining?). A few blocks away it goes back to Sport.

 

I have offered to carry these to any location in the United States for dyno testing, and with the exception of a customer in the desert southwest who cannot do it until September, there have been no takers.

That's about the best I can offer, since I don't have a 430 in my garage. I know the specific component differences between the various manufacturers and continue to believe that HyperFlow will provide the best performance results.