JP
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http://wot.motortrend.com/sounds-good-2013-ford-focus-st-to-feature-active-sound-tube-204803.html
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Chocs
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Lol... VTEC is an engineering feat with practical benefits... its sound is just a side effect. This on the other hand is more akin to an accessory..
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typer_801
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The 8th gen Civic Si has a sound tube, so not the equivalent of Honda, but somehting Honda has done (as well as MANY other MFG's).
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RocketRon
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"Active sound symposer". Funny. Some manufacturers are equipping cars with weird gadgets to compensate for the soulless soundtrack provided by turbo engines. They should accept what they are instead of trying to sound like what they are not... a real naturally aspirated performance engine. Posers.
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owequitit
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typer_801 wrote:
The 8th gen Civic Si has a sound tube, so not the equivalent of Honda, but somehting Honda has done (as well as MANY other MFG's).
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The 8th gen Si does not have a sound tube. It runs the air from the top of the fender, into the engine compartment, back into the resonator in the fender and then back out to the airbox.
This is similar to what the Ford Mustang and BMW Z4 have with an actual plastic tube running from the intake tube (between the airbox and throttle body) out to the firewall, where it connects and uses the firewall as a resonator. Completely different execution.
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JeffX
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typer_801 wrote:
The 8th gen Civic Si has a sound tube, so not the equivalent of Honda, but somehting Honda has done (as well as MANY other MFG's).
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wait, what?
No.
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Power Of Dreams
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Who gives a shit about a sound tube?
I'm more concerned about whether or not the car delivers or not.
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FiSH-Chan
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LOL my car also has a sound tube. I think they call it the exhuast pipe.
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DCR
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No matter what you call it, the intended result is similar.
http://blogs.insideline.com/roadtests/2006/11/2006-honda-civic-si-engine-soundtrack.html
I don't have a problem with what Ford did. The car was probably too muted inside, so they kicked it up a notch for the driver experience on their top trim Focus.
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CR-V9
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Wow, wow, wow. What is this?
I've never heard of this.
I thought the resonator within the intake runner is for low-mid range rpm air resonator for better torque. Nothing to do with its sound.
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owequitit
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Not really. If that is the case, then every 7th gen Accord V6 also has a "sound tube" as do many of the older Hondas that ran the intake tube into the fender well. It is actually NOT for the same reason. The resonator is located in the bumper for packaging reasons (there is a huge space below the headlight, behind the bumper and in front of the wheel well, so they stick it in there). The tube that runs from the fender into the engine compartment and then back into the top of the resonator (which is in the fender), is to get the engine the coldest air possible (fender air isn't heated by the engine compartment) without having a problem sucking up water (which is why it feeds from the very top of the fender and then runs down to the resonator through the bay).
The sole purpose of the "sound tube" on the Focus ST and Mustang GT is to pipe engine sound into the cabin, giving the engine a sportier tone because they can control the frequencies. The purpose of Honda doing it the way they did it was completely different. In fact, you can replace the fender to resonator tube and resonator on the Si completely with something like a T1R or M&M carbon fiber scoop and then there is only one tube into the engine bay. Same sound, slightly louder. Honda's main motivation with their intake setup was packaging efficiency and cold air while protecting against vapor lock. There might be a tiny benefit to doing it the way they did, but frankly, it isn't the primary reason (Like I said, they have done it on many "non-sporty" Hondas.
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superchg2
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typer_801 wrote:
The 8th gen Civic Si has a sound tube, so not the equivalent of Honda, but somehting Honda has done (as well as MANY other MFG's).
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Ex-squeeze me?
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owequitit
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owequitit wrote:
Not really. If that is the case, then every 7th gen Accord V6 also has a "sound tube" as do many of the older Hondas that ran the intake tube into the fender well. It is actually NOT for the same reason. The resonator is located in the bumper for packaging reasons (there is a huge space below the headlight, behind the bumper and in front of the wheel well, so they stick it in there). The tube that runs from the fender into the engine compartment and then back into the top of the resonator (which is in the fender), is to get the engine the coldest air possible (fender air isn't heated by the engine compartment) without having a problem sucking up water (which is why it feeds from the very top of the fender and then runs down to the resonator through the bay).
The sole purpose of the "sound tube" on the Focus ST and Mustang GT is to pipe engine sound into the cabin, giving the engine a sportier tone because they can control the frequencies. The purpose of Honda doing it the way they did it was completely different. In fact, you can replace the fender to resonator tube and resonator on the Si completely with something like a T1R or M&M carbon fiber scoop and then there is only one tube into the engine bay. Same sound, slightly louder. Honda's main motivation with their intake setup was packaging efficiency and cold air while protecting against vapor lock. There might be a tiny benefit to doing it the way they did, but frankly, it isn't the primary reason (Like I said, they have done it on many "non-sporty" Hondas.
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Should have said "hydrolock," not "vaporlock."
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JP
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They simply lack of this...
http://www.youtube.com/watch?v=ZPSOqqx0qxo&list=UU2oNZne97l9gaXk3jzGnTbg&index=8&feature=plcp
0:23!!!
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