A'PEXi PS Revolution Exhaust
07-29-2006 | 01:58 PM
#1
Thread Starter
Registered User
Joined: Jun 2006
Posts: 6
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From: phx, az
A'PEXi PS Revolution Exhaust
Does anyone have this? Does anyone know of a .com dealer for it? 
Pros? Cons? Thoughts? I'm dying for actual installed pics! It seems it's been out for maybe a year or so for the RX-8 but there doesn't seem to be a lot of commotion on here about it.
Pros? Cons? Thoughts? I'm dying for actual installed pics! It seems it's been out for maybe a year or so for the RX-8 but there doesn't seem to be a lot of commotion on here about it.
07-29-2006 | 03:12 PM
#3
http://www.apexi-usa.com/product_exh...=238&pageNum=1
Originally Posted by A'PEXi U.S.A.
Designed for hard tuned, street driven vehicles, the PS Revolution's exhaust pressure activated "active valve" system provides the hardcore enthusiast with the best of both worlds. The retracting valve is engaged and disengaged based upon exhaust gas pressure. This revolutionary new muffler design allows high powered street cars to maintain a tolerable, and legal, exhaust note at idle and light throttle acceleration while completely disengaging during high throttle, high load situations. Never before has an exhaust system seamlessly fused the streetability of a stock exhaust system and the performance of a low restriction racing exhaust. Like all A'PEX exhaust systems, the PS Revolution features a high quality SUS 304 stainless steel muffler. Being the standard for performance and reliability, the PS Revolution uses full stainless steel mandrel bent piping for added strength and minimum weight.
07-29-2006 | 03:13 PM
#4
Seems to me that even at full throttle it would still be a big clunk of crap in the way of the airflow... and hence cause some major restriction. Then again, i've never seen one of these in action, so i can't say for sure.
07-29-2006 | 08:41 PM
#7
jersey fresh
Joined: Dec 2005
Posts: 3,688
Likes: 0
From: Boston, MA
i believe the new z06 has some sort of device like that in its exhaust system.... please hold while i google......
got it http://www.caranddriver.com/previews...vette-z06.html
"Due to rising costs, those mufflers are steel instead of titanium, as they were on the previous Z06, but they are sophisticated in a different way. At low revs, all the exhaust goes through a single well-muffled tailpipe in each muffler. When you stomp on the throttle and exceed 3500 rpm, however, vacuum-powered bypasses open up a second, virtually straight-through tailpipe in each muffler. That sound will be worth the wait."
got it http://www.caranddriver.com/previews...vette-z06.html
"Due to rising costs, those mufflers are steel instead of titanium, as they were on the previous Z06, but they are sophisticated in a different way. At low revs, all the exhaust goes through a single well-muffled tailpipe in each muffler. When you stomp on the throttle and exceed 3500 rpm, however, vacuum-powered bypasses open up a second, virtually straight-through tailpipe in each muffler. That sound will be worth the wait."
Last edited by dillsrotary; 07-29-2006 at 08:44 PM.
10-27-2006 | 09:57 PM
#9
Rotary Public
Joined: Dec 2004
Posts: 1,512
Likes: 2
From: Northern Virginia near DC
Bump - Update. I just saw a reference for this thing. Sounds interesting if it's reliable over time. Does anybody have this muffler yet? At first I thought it looked like just another tornado device... but this is by A'PEXi. For $1,000 US, it had better be pretty good.
http://www.apexi-usa.com/product_exh...=238&pageNum=1
http://www.autocarparts.com/part/list/11/
http://www.apexi-usa.com/product_exh...=238&pageNum=1
http://www.autocarparts.com/part/list/11/
10-28-2006 | 10:40 AM
#12
⎝⏠⏝⏠⎠
Joined: Apr 2004
Posts: 8,625
Likes: 5
From: USA
Originally Posted by zoom44
weird i was explaining to fred my idea for something like this 2 years ago. a sort of a trombone device to tune the exhaust note or volume and power. i never got pass the idea stage...
Look up "cvec tuned exhaust"
A 2 stroke's exhaust is important because the exhaust setup determins the amount of torque based on back pressure. Inside the CVEC exhaust is a cone shaped metal wall that blocks the exhaust a bit. It's on a spring. As you give the car more throttle, the cone is pushed back, in effect giving you a larger exhaust system. So you get more torque in the low rpms, and more power up high as the exhaust expands.
Their website seems dead now, but google cache has it:
http://216.239.51.104/search?q=cache...ient=firefox-a
10-28-2006 | 03:55 PM
#13
Registered User
Joined: Nov 2003
Posts: 3,281
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From: Glendale, CA
Originally Posted by Paul_in_DC
Source?
10-28-2006 | 06:20 PM
#16
Lasse wankel
Joined: Aug 2006
Posts: 164
Likes: 0
From: Stockholm,Sweden
I have some news for the power and ear entusiast with my middle system which contains of a Swedish made Ferrita race 100 bit race cathalyst and 2.5" front silencer. Also a single rear muffler 2.5" with double 2.5" rear exhausts ending in 2 3.5" "Gold tip" rear tip ends. The sound is deep chrisp tone more like a potent 4-cylinder engine but also with the unique sound of a rotary engine. The both exhaust system made a solid 10 hp on my RotoTest hub dyno. I am about to sell these 2 system in Usa this winter but unfortanately i have no distributor in Usa. Want to sell Swedish made Swedish quality exhahaust system please contact me via PM! The system is made of highest stainless steel and should last the entire cars life! In the near future i will be testing a racing header for the RX-8.
/Lasse
/Lasse
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