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RX-8 aftermarket exhausts SUMMARY

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Old 10-05-2008, 02:04 AM
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Originally Posted by HWK11
does anyone know about Agency Power exhaust?
Nope. No one has it. If it wasnt mentioned in this thread, it doesnt exist.

(that was a hint by the way... I considered leaving it at that, but wasn't sure if you would figure it out on your own)
Old 10-05-2008, 03:29 PM
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any numbers on the OBX off ebay for $299? I know theyre cheap stuff but just curious
Old 10-05-2008, 07:24 PM
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Originally Posted by newguy
any numbers on the OBX off ebay for $299? I know theyre cheap stuff but just curious
Nope.
Old 10-10-2008, 10:51 PM
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Does any One have info on the Apexi PS Rev Exhaust. I only ask this Because I've used Apexi in my Previous Cars and have been very impress with. I've very Brand Loyal to apexi but Since I have not found any RX8 proof of the Exhaust beside hearing it on a friends 350z which sounds amazing but we all know that the RX8 is not the Same as 350z. Can anyone help me out with this? Thanks
Old 10-12-2008, 09:04 PM
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so what would the best sounding exhaust be or combination of cat back and mid pipe be without being to loud and having a good sound? I DONT want it to sound like a fart can
Old 10-12-2008, 09:25 PM
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Will the rx7store resonated mid-pipe fit the hks hi power exhaust.
Old 10-12-2008, 09:26 PM
  #482  
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Yes.
Old 10-13-2008, 12:58 PM
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^thanks
Old 10-24-2008, 08:09 PM
  #484  
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I miss my old midpipe
Old 10-25-2008, 08:37 PM
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hey

hey man i think you are good at this.
Which exhaust system will give most HP?



Originally Posted by bobclevenger
OK, here is what I have found so far, all in one place.

First, the sound of a stock RX-8 -- click here



Second, "Header-back" systems -- these are NOT street-legal:

Greddy: Price is about $1000 for complete system.
Greddy claims a 22HP increase over stock for this.
Click here for info

B&B: Price is about $950 for the cat-back system plus the race pipe.
Vivid Racing claims a 19 HP increase over stock (unknown if this is with or w/o cat).
Click here for info
Click here for video clip


Third, Street-legal systems with cat. If the info isn't there, I didn't find it. If anyone has any more info on an exhaust system for the RX-8 please e-mail me at bob@bobclevenger.com and I will add it to this post. That way we keep all the exhaust info in one place.


On to the exhaust systems!

Autoexe: Price is about $1100
Click here for photo
Click here for info


B&B: Price is about $700.
Vivid Racing claims a 19 HP increase over stock (unknown if this is with or w/o cat).
Click here for info
Click here for video clip


Borla: Price is about $600.
Borla claims 11.5 HP gain over stock.
Click here for sound clip
Click here for Borla website


Greddy: Price is about $625
Click here for photos
Click here for dyno charts
Click here for video clips


HKS: Price is about $1300.
HKS claims 9 HP gain over stock.
Click here for info
Click here for a video clip.

Hymee's cat-back system
Dyno test to come
Click here for info and photos.


JIC: Price is about $1700 for Titanium and about $900 for Stainless Steel.
JIC claims 5 HP gain over stock
Click here for info


Magnaflow: Info in this thread
Click here for sound clip Thanks to Zoom Zoom for letting me record his exhaust. Sounds nice!


Racing Beat: Coming soon
Click here for info


Rotary Extreme: Price is about $600
Click here for info Video clip is available from this site.


RX8store: Price is about $575
Click here for info
Click here for a sound clip.


Spintech: Price is about $550
I have the first production unit on my RX-8.
Dyno testing will be done after 1 January 2004.
Click here for photos and a sound clip of this exhaust being driven.
Click here for manufacturer's website
Old 10-25-2008, 09:18 PM
  #486  
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Okay I've had my cat back Borla for about 3 months now and I think I'm convinced I want a high flow midpipe. I don't want to go without a cat though, because I don't want to suffocate when I'm stuck in traffic.

What fits, what's available, what's best?? Search is not yielding me useful results.
Old 10-28-2008, 12:45 PM
  #487  
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just tell me which one to get!!!!!!!!!!!!!!! wahhhhhh
Old 10-31-2008, 05:46 PM
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That is an old link for rotary extreme, that exhaust is no longer available.
Old 11-07-2008, 10:02 PM
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Does Greddy Or Borla Give My Rx8 Most Hp??
Old 11-08-2008, 02:44 AM
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^^^ Are you joking? All aftermarket exhausts for the Rx8 are basically the same in terms of power. The on;y one that is different is the Rotary Extreme Dual Cat Back Exhaust. Find the one that sounds the best and get that. Please learn to search and you will understand this better.
Old 11-09-2008, 08:46 AM
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You need to learn to search and not just popup and write. Have you read the first post of this thread? I suppose not.

Originally Posted by Rx8 Fanatic
^^^ Are you joking? All aftermarket exhausts for the Rx8 are basically the same in terms of power. The on;y one that is different is the Rotary Extreme Dual Cat Back Exhaust. Find the one that sounds the best and get that. Please learn to search and you will understand this better.
Old 11-09-2008, 06:32 PM
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^any gains between aftermarket exhausts for the rx8 are negligible, there is only going to be a few hp difference. I have the b&b exhaust and I didn't get nearly as much as the claimed hp gains, still sounds great though. yor best bet when picking exhaust is to focus more on sound and appearance. if you're looking for power, get a header-back exhaust or a midpipe, that's the only real way to see any gains.
Old 11-09-2008, 08:18 PM
  #493  
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Originally Posted by two zero two
^any gains between aftermarket exhausts for the rx8 are negligible, there is only going to be a few hp difference. I have the b&b exhaust and I didn't get nearly as much as the claimed hp gains, still sounds great though. yor best bet when picking exhaust is to focus more on sound and appearance. if you're looking for power, get a header-back exhaust or a midpipe, that's the only real way to see any gains.
thank you. the answer i needed. i just didnt like seeing those claimed horsepower numbers. now i'll just get a midpipe and the cheapest well known brand catback to follow
Old 11-09-2008, 08:47 PM
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mazsport dual resonated midpipe + borla catback = performance + throat
Old 11-09-2008, 08:51 PM
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B&B mid pipe + HKS hi-power = performance + *****
Old 11-09-2008, 09:11 PM
  #496  
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^ i like that
Old 11-09-2008, 10:15 PM
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Just installed turbo xs catback and I love it! The sound is great, feels more responsive, and best of all it looks super discreet.
Old 11-11-2008, 10:28 AM
  #498  
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anybody have any dynos of only their cat-backs installed?
Old 11-11-2008, 02:22 PM
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Originally Posted by Benjamz
anybody have any dynos of only their cat-backs installed?
Yep - How about this:



Cheers,
Hymee.
Attached Thumbnails RX-8 aftermarket exhausts SUMMARY-rx8chassisdynocatbackbeforeandafter.jpg  


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