Apexi PS Revolution exhaust though?
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Joined: Apr 2003
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From: Stockton 209, CA, USA
Apexi PS Revolution exhaust thought/input?
hey,
i just saw an add in the new import tuner about this new exhaust system.
i thought it's a great idea but i want to know how it works. is it just a butterfly valve that opens when there is enough exhaust pressure. or if the turbine lookin think actually has a use. anyone know who is selling this yet? is it worth the extra $?
"what it says on the jpn site...since i can't read japanese i used a translator lol
- It builds in the anti- pressure response type valve, is low quiet with revolution with actualizing the high power compatibility with high revolution. - You aim for high durability, all stainless steel (SUS304), in the spring it is to be superior adopting the material the inconel material very in heat resistance. - Our company GTspec. You adopt the cirque & the inner attaching finisher for the shell of the muffler, producing the high-class impression. - In the one for opened valve timewise adjustment of valve attachment special tool. - The main silencer - the glass wool all use ‚¹ ‚¸, clearing noise regulation. Because the glass wool is not used, secular to be difficult to deteriorate, over the long period of time keeping the silencing effect. - Point of difference of present anti- pressure variable valve type muffler is as follows. Valve when closing fully exhaust noise sound arresting because it can point capacity altogether silencer, silent characteristic is high. Valve when opening fully straight structure (the opening area ƒÓ 80 suitable) for the sake of, volume and output change the body impression is possible. In order to arrange the tube doubly and triply, miniaturization is possible in comparison with the genuine variable muffler which is arranged in parallel and vertically. Initial torque of the spring is possible modification possibility (opened valve timewise modification of the valve).
Generally as for the muffler, while you can pull out power in the extent high rotary limits whose main pipe diameter is thick, volume becomes high and low the response in the rotary limits becomes sacrifice. If silent characteristic and the rotary limits are seriously considered conversely low, effect is produced on power in the high rotary limits. Until now there was no muffler which makes the quality satisfy where these are contrary entirely. It is the muffler of the completely new concept where the PS Revolution muffler adopted the anti- pressure response type valve (in the midst of patent application), of new development these was compatible the quality which is contrary in the higher-order origin. Because the valve is closed low when turning whose anti- pressure is low, function it does the silencer of hybrid structure - as, actualizes silent characteristic and response rise. In addition at the time of high revolution because this valve opens, becomes straight structure, sound and the high power which is force are actualized. Now here, the necessary time, necessary volume, it meaning that the muffler of the dream where you can obtain power is born, it does. Of course, in JASMA neotype complete conformity. Because it is superior even in durability the SUS304 all stainless steel finish and the hybrid structural silencer - with, feeling at rest, it can use."
i just saw an add in the new import tuner about this new exhaust system.
i thought it's a great idea but i want to know how it works. is it just a butterfly valve that opens when there is enough exhaust pressure. or if the turbine lookin think actually has a use. anyone know who is selling this yet? is it worth the extra $?
"what it says on the jpn site...since i can't read japanese i used a translator lol
- It builds in the anti- pressure response type valve, is low quiet with revolution with actualizing the high power compatibility with high revolution. - You aim for high durability, all stainless steel (SUS304), in the spring it is to be superior adopting the material the inconel material very in heat resistance. - Our company GTspec. You adopt the cirque & the inner attaching finisher for the shell of the muffler, producing the high-class impression. - In the one for opened valve timewise adjustment of valve attachment special tool. - The main silencer - the glass wool all use ‚¹ ‚¸, clearing noise regulation. Because the glass wool is not used, secular to be difficult to deteriorate, over the long period of time keeping the silencing effect. - Point of difference of present anti- pressure variable valve type muffler is as follows. Valve when closing fully exhaust noise sound arresting because it can point capacity altogether silencer, silent characteristic is high. Valve when opening fully straight structure (the opening area ƒÓ 80 suitable) for the sake of, volume and output change the body impression is possible. In order to arrange the tube doubly and triply, miniaturization is possible in comparison with the genuine variable muffler which is arranged in parallel and vertically. Initial torque of the spring is possible modification possibility (opened valve timewise modification of the valve).
Generally as for the muffler, while you can pull out power in the extent high rotary limits whose main pipe diameter is thick, volume becomes high and low the response in the rotary limits becomes sacrifice. If silent characteristic and the rotary limits are seriously considered conversely low, effect is produced on power in the high rotary limits. Until now there was no muffler which makes the quality satisfy where these are contrary entirely. It is the muffler of the completely new concept where the PS Revolution muffler adopted the anti- pressure response type valve (in the midst of patent application), of new development these was compatible the quality which is contrary in the higher-order origin. Because the valve is closed low when turning whose anti- pressure is low, function it does the silencer of hybrid structure - as, actualizes silent characteristic and response rise. In addition at the time of high revolution because this valve opens, becomes straight structure, sound and the high power which is force are actualized. Now here, the necessary time, necessary volume, it meaning that the muffler of the dream where you can obtain power is born, it does. Of course, in JASMA neotype complete conformity. Because it is superior even in durability the SUS304 all stainless steel finish and the hybrid structural silencer - with, feeling at rest, it can use."
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Joined: Jan 2004
Posts: 630
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From: lawrenceville, ga
Re: (All-Motor H22A)
sorry to bring back a dead thread, but i figured somebody would need this info..
There are two types of these turbine exhausts out right now, spring/censor activated and electronic. The Apexi PS Revolution is a spring/censor activated turbine. When you have low throttle, the censors load the air into the seperate channels and out the exhaust in a slow manner (refer to illustrations above) without using the turbine, thus reducing noise. During points of high acceleration, the censor reads the high air flow and shuts off the seperate channels while shooting the exhaust air straight through the turbine. Why would you want it to just go straight through the turbine and not out a pipe? The turbine acts as sort of like putting your ceiling fan on backwards. When the turbine spins it creates a vaccum inside of the exhaust and pulls the air out the exhaust pipes quicker, creating much higher exhaust air flow. The faster the air gets out of your system the less chance you have of congestion and you'll get more power. The trick of air in a system is to get as much fresh cold air (intake) as possible IN the cylinder as fast as possible, and to get the most used hot air (exhuast) OUT of the engine as fast as possible.
CLIFF NOTES: Low throttle equals quieter exhaust, high acceleration pushes turbine to create a vacuum and suck air faster out of the exhaust.
Is it worth the Benjis? You better believe it
Modified by G1_TEGGY at 11:14 PM 6/3/2004
There are two types of these turbine exhausts out right now, spring/censor activated and electronic. The Apexi PS Revolution is a spring/censor activated turbine. When you have low throttle, the censors load the air into the seperate channels and out the exhaust in a slow manner (refer to illustrations above) without using the turbine, thus reducing noise. During points of high acceleration, the censor reads the high air flow and shuts off the seperate channels while shooting the exhaust air straight through the turbine. Why would you want it to just go straight through the turbine and not out a pipe? The turbine acts as sort of like putting your ceiling fan on backwards. When the turbine spins it creates a vaccum inside of the exhaust and pulls the air out the exhaust pipes quicker, creating much higher exhaust air flow. The faster the air gets out of your system the less chance you have of congestion and you'll get more power. The trick of air in a system is to get as much fresh cold air (intake) as possible IN the cylinder as fast as possible, and to get the most used hot air (exhuast) OUT of the engine as fast as possible.
CLIFF NOTES: Low throttle equals quieter exhaust, high acceleration pushes turbine to create a vacuum and suck air faster out of the exhaust.
Is it worth the Benjis? You better believe it
Modified by G1_TEGGY at 11:14 PM 6/3/2004
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From: Norcal
Re: (G1_TEGGY)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G1_TEGGY »</TD></TR><TR><TD CLASS="quote">sorry to bring back a dead thread, but i figured somebody would need this info..
There are two types of these turbine exhausts out right now, spring/censor activated and electronic. The Apexi PS Revolution is a spring/censor activated turbine. When you have low throttle, the censors load the air into the seperate channels and out the exhaust in a slow manner (refer to illustrations above) without using the turbine, thus reducing noise. During points of high acceleration, the censor reads the high air flow and shuts off the seperate channels while shooting the exhaust air straight through the turbine. Why would you want it to just go straight through the turbine and not out a pipe? The turbine acts as sort of like putting your ceiling fan on backwards. When the turbine spins it creates a vaccum inside of the exhaust and pulls the air out the exhaust pipes quicker, creating much higher exhaust air flow. The faster the air gets out of your system the less chance you have of congestion and you'll get more power. The trick of air in a system is to get as much fresh cold air (intake) as possible IN the cylinder as fast as possible, and to get the most used hot air (exhuast) OUT of the engine as fast as possible.
CLIFF NOTES: Low throttle equals quieter exhaust, high acceleration pushes turbine to create a vacuum and suck air faster out of the exhaust.
Is it worth the Benjis? You better believe it
Modified by G1_TEGGY at 11:14 PM 6/3/2004</TD></TR></TABLE>
THere is just one problem with that "pulling turbine" theory. THere is no free energy. THe energy to spin this turbine comes from backing up exhaust flow and thus creating more pressure in the muffler to driver the turbine.
So if you look past the marketing and think about it analytically, you'll notice that the turbine does the opposite of what is advertised. It creates higher pressure in the muffler by obstructing the flow of air.
There are two types of these turbine exhausts out right now, spring/censor activated and electronic. The Apexi PS Revolution is a spring/censor activated turbine. When you have low throttle, the censors load the air into the seperate channels and out the exhaust in a slow manner (refer to illustrations above) without using the turbine, thus reducing noise. During points of high acceleration, the censor reads the high air flow and shuts off the seperate channels while shooting the exhaust air straight through the turbine. Why would you want it to just go straight through the turbine and not out a pipe? The turbine acts as sort of like putting your ceiling fan on backwards. When the turbine spins it creates a vaccum inside of the exhaust and pulls the air out the exhaust pipes quicker, creating much higher exhaust air flow. The faster the air gets out of your system the less chance you have of congestion and you'll get more power. The trick of air in a system is to get as much fresh cold air (intake) as possible IN the cylinder as fast as possible, and to get the most used hot air (exhuast) OUT of the engine as fast as possible.
CLIFF NOTES: Low throttle equals quieter exhaust, high acceleration pushes turbine to create a vacuum and suck air faster out of the exhaust.
Is it worth the Benjis? You better believe it
Modified by G1_TEGGY at 11:14 PM 6/3/2004</TD></TR></TABLE>
THere is just one problem with that "pulling turbine" theory. THere is no free energy. THe energy to spin this turbine comes from backing up exhaust flow and thus creating more pressure in the muffler to driver the turbine.
So if you look past the marketing and think about it analytically, you'll notice that the turbine does the opposite of what is advertised. It creates higher pressure in the muffler by obstructing the flow of air.
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