DD2
23-08-2006, 05:54 PM
Just thought i'd jump on here and share a few words in regards to Apexi's Active Tail Silencer.
I don't see many people using them, but after installing it on my EK4 i give it 2 huge :thumbsup:
Basically the centre of the silencer is spring loaded and as pressure builds up it will open allowing more sound / gas to pass. On my car it will open pretty much the same time as VTEC so not only do i get the induction roar the exhaust also opens up to complete the noise. Down low you would think the car was stock. There's also no noticable power loss.
Here's the blurb from Apexi:
http://www.apexi-usa.com/graphics/products/2171.jpg
The ATS was developed as a high performance evolution to the standard tail pipe silencers available in the market today. While many people enjoy the power gains of a racing exhaust on the track, often times these systems require a silencer to be installed in the tip for use on the street. While sound output can be dramatically lowered using a non-adjustable silencer, unfortunately response and power tend to suffer due to increased exhaust gas restriction. The ATS (Active Tail Silencer) uses the same active valve technology as the PS Revolution exhaust system. The spring loaded valve is engaged and disengaged based upon exhaust gas pressure. This allows for effective sound suppression for the street, without the power loss under high load. Dyno tests have proven power levels to be nearly identical to an exhaust using no silencer at all.
Here's a comparison between no silencer, normal silencer and the ATS.
http://www.apexi-usa.com/graphics/articles/43.jpg
:cool:
Edit: Now with video. So it has only been a couple years since my original post, but better late than never i say :)
VIDEO (http://www.youtube.com/watch?v=gK8OAas_rKw)
I don't see many people using them, but after installing it on my EK4 i give it 2 huge :thumbsup:
Basically the centre of the silencer is spring loaded and as pressure builds up it will open allowing more sound / gas to pass. On my car it will open pretty much the same time as VTEC so not only do i get the induction roar the exhaust also opens up to complete the noise. Down low you would think the car was stock. There's also no noticable power loss.
Here's the blurb from Apexi:
http://www.apexi-usa.com/graphics/products/2171.jpg
The ATS was developed as a high performance evolution to the standard tail pipe silencers available in the market today. While many people enjoy the power gains of a racing exhaust on the track, often times these systems require a silencer to be installed in the tip for use on the street. While sound output can be dramatically lowered using a non-adjustable silencer, unfortunately response and power tend to suffer due to increased exhaust gas restriction. The ATS (Active Tail Silencer) uses the same active valve technology as the PS Revolution exhaust system. The spring loaded valve is engaged and disengaged based upon exhaust gas pressure. This allows for effective sound suppression for the street, without the power loss under high load. Dyno tests have proven power levels to be nearly identical to an exhaust using no silencer at all.
Here's a comparison between no silencer, normal silencer and the ATS.
http://www.apexi-usa.com/graphics/articles/43.jpg
:cool:
Edit: Now with video. So it has only been a couple years since my original post, but better late than never i say :)
VIDEO (http://www.youtube.com/watch?v=gK8OAas_rKw)