I was just checking out rotaryextreme.com and it looks like they're working on an exhaust. They have a video posted and it sounds pretty nice...

http://www.rotaryextreme.com/rx8exhaust.html

I really dont care for that sound. Too ricey, imo. Kinda sounds like a hopped up civic.

i guess i don't mind the sound that much...although it does seem a little civic-ky...i'd like to see what it looks like though...those pictures you can't really tell...

Dan

omg....I thought it was a civic with a mazda and rx-8 badge. Please, don't lower the class. The exhaust sounds totally civic.

Well, at first it sounded good... but then I busted out the old Borla sound clip and, yeah, it sounds sorta rice compared to the Borla :p

have the link for borla? I have a 540 with remus exhaust and resonator removed, it sound so deep and sweet. hope I can find something simular.

what a total fart can.

what's everyone's deal with these absolutely HUGE resonators?? volume?? it's fine to me, i just hate the stupidly HUGE resonators, with their stupidly HUGE tips, screwing up the frequency of the sound, giving it a "deeper tone" (<- that's the fart). christ... if only everyone who buys aftermarket exhaust wasn't so dense as to think that no less than 3" internal diameter all the way back wasn't the best thing in the world, and that less internal pressure MUST equal less back pressure... *sigh* :mad:

Originally posted by HKRX8
have the link for borla? I have a 540 with remus exhaust and resonator removed, it sound so deep and sweet. hope I can find something simular.

Just read this thread, there are a couple of sound clips...

http://www.rx8club.com/showthread.php?s=&threadid=12631&perpage=15&pagenumber=1

Yak....

tka mp5 =)

not too impressive

wheres their intake

I think you all are a bit overly-fixated on the sound, considering you're judging it based on listening to an audio sample, recorded on God only knows what, on your computer. I'm reasonably certain I could take one exhaust and make it sound about ten different ways, depending on how I recorded it. Personally, I was interested to see how they've constructed it....they seem to have fewer right angles in the exhaust path, which you would think would lead to better flow. Maybe. I'd like to see dyno comparisons rather than more audio samples of dubious merit.

jds

JDS is right - it's REALLY hard to tell what an exhaust sounds like from a recording. Being familiar with how RX-7's (turbo and non-turbo) sound, that sounds EXCELLENT. In person it will sound way better, and likely sound incredible under load.

Getting a deep tone is what you want on a rotary. Non-turbos have a tendency to get a "weed-whacker" sound - real high-pitched whiney sound. A non-turbo 2nd gen with headers and a Dynomax cat-back will make you cringe.

Part of the problem with a recording like that is you don't get the full frequency range - a lot of a good exhaust tone is in the low-end of the audio spectrum. You're not gonna hear that from a crappy mic on a camcorder, then digitized, then played through computer speakers.

Dale

Originally posted by dcfc3s
Non-turbos have a tendency to get a "weed-whacker" sound - real high-pitched whiney sound. A non-turbo 2nd gen with headers and a Dynomax cat-back will make you cringe.

a lot of a good exhaust tone is in the low-end of the audio spectrum.

Dale

weed whacker?? i suppose that just depends on what your perception of a powerful sounding exhaust note actually sounds like.

although i'm not snooty and dispise V8's and say you can't make any good power from them comparatively ('cause it can be done), i don't really like their sound. yes, i AM actually a fan of weed whackery. i like small combustion chambers and high rpm: 2stroke motors are some of my faves.

if we're gonna compare sound samples, let's then hear some of the best:

...poopy. scuderia ciriani took down their 787B movies... i don't have them anymore 'cause my computer is sickly, old, and space concientiousness is a necessity.

AutoExe's R26B-derivative power'd 03 entry: 4.3Mb (http://www.mymazdarotary.com/mazda_rotary_events/le-mans_2002/autoexe-wr_le-mans_2002_videos/Le-Mans_2002_Yojiro-Terada_flyby.mpg)

wakeech-that sounded nice.......i like it

andrew

The exhaust tone is actually pretty deep. The video was recorded by a digital camera that can take short movies. It does not have the best microphone in the world.

The selling point of our exhaust is that it's not outrageous loud. It's mild enough that you can still listen to your classical music inside the car when you are just cruising. But when you floor it, you can hear the nice exhaust tone. I will use a better recording device to record the sound after the product is ready.

The 2nd selling point is that our exhaust does not have those sharp 90 degree bend at the Y like others. It will have better flow.

We will dyno the finish product after it's done so the result will be accurate.

Chuck Huang

cant argue with that

Has anybody installed the rotary extreme exhaust on their car?

Any idea on the horsepower gains? Torque gains?

I like the sound of this exhaust best and was just wondering about its quality.

Our exhaust is not released yet. We made the prototype here in the US and send it to Japan to have those mass produced. Our shipment will not be here until end of Janauary.

Thank you.

Chuck Huang
http://www.rotaryextreme.com

We have got the beta tester from our Japanese manufacturer. Here are some photos:

1. Our unique V Shape Design minimizes bending angles at the split of the mufflers to roughly 45 degrees to maximize exhaust flow. 1st one on the market.

http://www.rotaryextreme.com/rx8exhaust/rxex-1.jpg

2. Our 3 piece design minimizes shipping box size so shipping is cheaper for the customers.

http://www.rotaryextreme.com/rx8exhaust/rxex-2.jpg

3. Our piping comes fully polished to mirror shine. The pipes were polished before welding. Some companies polish the piping after welding to hide bad welds. We polish the pipe before welding to show the true quality of welds. The TIG weld on our exhaust is a piece of art.

http://www.rotaryextreme.com/rx8exhaust/rxex-3.jpg

4. Another angle of the exhaust

http://www.rotaryextreme.com/rx8exhaust/rxex-5.jpg

The systems should be ready for sale by the end of January. Dyno sheet coming soon.

Chuck Huang
http://www.rotaryextreme.com

Nice work!

I bet those straight through mufflers have an interesting sound - can't wait for a clip!

Cheers,
Hymee.

Already got a video clip on the website from our prototype that was made 2 months ago.

Please go to http://www.rotaryextreme.com/rx8exhaust.html.

Scroll down and you can see a link for video clip.

The clip is taken from a digital cam with video recording function so the sound is not really close to the real sound. The sound in real life is much deeper. We will take a sound clip from a better camera once we finish dyno testing on the beta.

Chuck Huang
http://www.rotaryextreme.com


Originally posted by Hymee
Nice work!

I bet those straight through mufflers have an interesting sound - can't wait for a clip!

Cheers,
Hymee.

Wow, looks nice Chuck. Don't suppose you'd take a slightly used Borla in trade? ;) (J/K)

Looks EXTREMEly cool! :cool: You folks obviously have put more thought than just make it pretty and sound nice into yours.

ps. link didn't work to the viceo clip.

Looks nice... I'll be waiting for that dyno before I decide which exhaust I am buying.

Might even be able to save a little money on shipping to get the exhaust and intake from the same company.

Link doesn't work for me either. There is an extra "." at the end. Try this:

http://www.rotaryextreme.com/rx8exhaust.html


BTW... what size are those tips?

Target price is $600.

Sorry about the link. Here is the correct one.

http://www.rotaryextreme.com/rx8exhaust.html

The camera I use is a digital cam that can takes video so the sound clip isn't really the true presentation. The exhaust tone is much deeper in real life. We will use a better one to take some video later on before it's ready for sale.

Chuck Huang
http://www.rotaryextreme.com



Originally posted by Spin9k
Looks EXTREMEly cool! :cool: You folks obviously have put more thought than just make it pretty and sound nice into yours.

ps. link didn't work to the viceo clip.

:) I don't konw what to say.

Chuck Huang
http://www.rotaryextreme.com


Originally posted by Omicron
Wow, looks nice Chuck. Don't suppose you'd take a slightly used Borla in trade? ;) (J/K)

what size is the piping on that one and how much does it weight? This definatly my favorite exhaust so far, and looks perfect for anyone thinking of keeping the same exhaust when they go Forced Induction.

Surely price competitve!

So if that is the beta tester than what is that in the sound clip?

Not trying to be a ass just curious.

I understand its a prototype just are the mufflers different ect. ect.

The prototype was made in the US. The mufflers are the same as the ones on the beta. After we made the prototype, we sent it to Japan. Beta is the pre-production sample from the Japanese factory. After we test it and then we can finalize the production. cool?

Chuck Huang
http://www.rotaryextreme.com

Originally posted by Turbo_neon
So if that is the beta tester than what is that in the sound clip?

Not trying to be a ass just curious.

I understand its a prototype just are the mufflers different ect. ect.

We will try 2.5", 2.75", and 3" to see which one makes the most power and then we will finalize the production.

I will weigh it after the hoildays.

Chuck


Originally posted by Crashunit
what size is the piping on that one and how much does it weight? This definatly my favorite exhaust so far, and looks perfect for anyone thinking of keeping the same exhaust when they go Forced Induction.

One of the nicest exhaust for the 8 so far.

ps Since the tips are the only expose part of the exhaust, wondering if you do have a close up pix of the tips?

Sorry, I don't have a nice pic of the tip right now. The only one I have is this.

http://www.rotaryextreme.com/rx8exhaust/rxex-4.jpg

The tip style can be changed. That's what this Beta tester is for so we can modify the minor stuff before we send it in for final production.

BTW, due to our unique v shape design, the tips won't be the only thing showing. You can see the canisters if you stand about 15 ft from the back of the car.

Chuck Huang
http://www.rotaryextreme.com


Originally posted by M-ster
One of the nicest exhaust for the 8 so far.

ps Since the tips are the only expose part of the exhaust, wondering if you do have a close up pix of the tips?

You can see the canisters if you stand about 15 ft from the back of the car.

This exhaust is in serious contention for my RX-8. I would love to see some pics once installed.

Hows the clearance for aftermarket sways more specifically Racing Beats rear sway.

The bends are very gradual on this exhaust which is good just wondering on how this will affect future mods or if it even will.

Thanks for the response.

Very, very nice Chuck.

How about 3-4 inch rotary-shaped tips as an option, Chuck?

Omicron:
Very, very nice Chuck.

How about 3-4 inch rotary-shaped tips as an option, Chuck?

(I've requested this from a different mfr more than once and never heard back.)

Chuck, this is exactly what we're looking for:

[photo edit: center accent removed]

God please no! I think stock the car goes quite far enough with the rotary theme. Enough is enough!

Just my opinion of course!

jds

I would agree that the three rotary accents in the schopped picture that I borrowed is a bit much. My solution is to not have the center accent. I've gone back and edited the photo in my original post. Now if anyone thinks that the license frame shows "too much chrome" or whatever, please note that this can be taken out as well (alternatively, you can note that this is not your car).

The marketplace will determine whether or not rotary-shaped exhaust tips are a hot item. My prediction is that an exhaust system mfr can carve a huge niche by going with rotary-shaped tips. For each person who may not be into them, there may be a hundred who love them.

And if I have to wait too long for someone to come through with offering what we want, then maybe I'll just make them myself. But I'm confident that someone will fill this market. What a striking way to set your product apart from the crowd. And I expect that Chuck has a more passionate connection to rotary symbolism than most of the others do.

Whoever is the first to come out with these exhaust tips, I'm all over it. And for those who agree that it looks hot, just wait til I take the photo of flames shooting out!

even better.... those rotary shaped tip on the mazdaspeed or autoexe rear bumper & lose the rotary center piece all together! ;)

You will not have any problem fitting aftermarket sway bars. Sharp bends make you lose exhaust velocity. That's why we use gradual bends with minimum bending angle. There isn't any adverse effect, only good ones.

Chuck Huang

Originally posted by zerohour
Hows the clearance for aftermarket sways more specifically Racing Beats rear sway.

The bends are very gradual on this exhaust which is good just wondering on how this will affect future mods or if it even will.

Thanks for the response.

That's a very interesting idea but I don't know if it's possible to do so. We might have to use some generic ones to reduce cost. I don't know how much it's going to cost to make a tip like that. I don't know if it can fit there either. I will look into it though.

Chuck Huang

Originally posted by Omicron
Very, very nice Chuck.

How about 3-4 inch rotary-shaped tips as an option, Chuck?

It might be important to remember the multitudes of RX-8 owners who are gladly shelling out ~$100 just for the center accent.

Whichever way you decide to go on the tips, thanks for your efforts. I'm eager to see your dyno.

Hey Chuck;

Is your exhaust system compliant with California's 95dB max output rating or is intended for off-road use only?

they dun use any equipment to test the dB rate now, it'z judged by the pig's ear.

Ouch. Let me guess...

You listen to NWA in your 8?

Very nice work Chuck. If this pushed more HP than the Borla and you are priced around it, you got yourself a winner. Please post up the dyno sheet when it's ready. Thanks! :cool:

It's pretty quiet at idle and cruising. I don't have the equipment to measure the sound level so I don't know if it will be more than 95 dB or not. Doesn't sound like it though.

Let's just say it's not loud enough to attract attention from the cops.

Chuck Huang

Originally posted by v300
Hey Chuck;

Is your exhaust system compliant with California's 95dB max output rating or is intended for off-road use only?

http://www.rotaryextreme.com/rx8exhaust/rxex-7.jpg

You can see the V-shape canisters if you stand 15-20 ft away from the car. More photos coming soon.

Chuck Huang

By my eyeball, those mufflers are hanging significantly lower than other designs. I was wondering if you've considered modifying (flattening) the bottom corners of those cans to help take the inevitable scrapes - particularly for those coilover folks who plan on dropping their ride.

Eagerly awaiting your follow-on info.

It won't scrape because the lowest point of the muffler is very close to the rear axles. It's purposedly designed like that so you can see the mufflers. It's lower than the lowest point of the suspenion arm by about 1".

Chuck Huang
http://www.rotaryextreme.com

Originally posted by HIX8
By my eyeball, those mufflers are hanging significantly lower than other designs. I was wondering if you've considered modifying (flattening) the bottom corners of those cans to help take the inevitable scrapes - particularly for those coilover folks who plan on dropping their ride.

Eagerly awaiting your follow-on info.

That's good to hear. Looks excellent so far.

If you have a good pic of the car sitting on the ground, I'd like to get an idea of what it looks like for the street (even with your tail skirt mod).

Originally posted by Rotary Extreme
It won't scrape because the lowest point of the muffler is very close to the rear axles. It's purposedly designed like that so you can see the mufflers. It's lower than the lowest point of the suspenion arm by about 1".

Chuck Huang
http://www.rotaryextreme.com

What if your 8 is dropped? Any possible issues?

I do like the design - nice work.

BTW, any update on release, cost, etc.?

Here is another photo of the exhaust.

http://www.rotaryextreme.com/rx8exhaust/rxex-8.jpg

You are not going to scrape it unless you lower the car more than 3"

The release date should be between mid-Feb. to end of Feb. We are waiting for the exhaust to come from Japan. Cost on the exhaust is $600.

Thank you.

Chuck Huang
http://www.rotaryextreme.com

bump...any dyno's of this yet?