AIRBOX / INTAKE DIY - Helmholz resonator bypass
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Joined: Jul 2009
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Go to napa
5 bucks get a hose plug ( it is a rubber piece with two washers one on each side and a nut and bolt through the middle) drop it in the hemholtz hole tighten the nut rubber expands closes the hole replace the stock hose and you get the sound and an easy mod for very little.
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From: USA
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5 bucks get a hose plug ( it is a rubber piece with two washers one on each side and a nut and bolt through the middle) drop it in the hemholtz hole tighten the nut rubber expands closes the hole replace the stock hose and you get the sound and an easy mod for very little.
why dont people here get that a simple cap over the resonator is all that is required?
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I have the cap
Was just messing around with other options, got bored one day, if the nut comes loose I will upgrade the 3.4l, was actually putting the cap on today, however, no way the nut can loosen.
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I am looking at exhaust
Just not sure which one, with a cabrio. I do not want it to loud.
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Joined: May 2008
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cud u post a pic of this setup..
but im jus wondering wd jus a rubber cap suffice? or is this bolt necessary?
Also my other concern is the temperature issue.. will the rubber melt in anyway? or Is the temp actually not that hot in the airbox?
thank you
Last edited by Porschedeisgn; Oct 15, 2009 at 10:45 AM.
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Bumping an old thread.
A few days ago I came across this thread about capping off the resonator to give a little more sound down low. Surprisingly, I had never heard about this before, especially given how much time I spend on this board reading about mods to do to my car.
Anyway, I went out to my garage, popped the engine cover, and took a look. Seemed pretty simple and straightforward... just use an object to block off the resonator tube. But what object? Hmmm. I knew I could find something to do the job around the house.
I went into my 3 year old daughter's room, and found the perfect object. A plastic cup from her toy tea set.
I undid the hose clamp and jammed the cup in upside down, fit the rim around the bottom portion, and then retightened the hose clamp. Done and done.
Now I only took the car around the block, and I can't say that it sounds any different, but we'll see tomorrow when I give it a true test.
A few days ago I came across this thread about capping off the resonator to give a little more sound down low. Surprisingly, I had never heard about this before, especially given how much time I spend on this board reading about mods to do to my car.
Anyway, I went out to my garage, popped the engine cover, and took a look. Seemed pretty simple and straightforward... just use an object to block off the resonator tube. But what object? Hmmm. I knew I could find something to do the job around the house.
I went into my 3 year old daughter's room, and found the perfect object. A plastic cup from her toy tea set.
I undid the hose clamp and jammed the cup in upside down, fit the rim around the bottom portion, and then retightened the hose clamp. Done and done.
Now I only took the car around the block, and I can't say that it sounds any different, but we'll see tomorrow when I give it a true test.
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If you unplug the vacuum line only, the valve in the resonator will remain OPEN, not closed, and you will get the opposite of the desired effect.
You can bypass the resonator vacuum distributor control solenoid and plug the incoming source vacuum line directly into the vacuum line running to the resonator valve itself. The easiest way to accomplish this is to unclip the distributor solenoid from the airbox (it's the small gray solenoid on the back of the airbox). Then, remove the rubber vacuum elbow where it connects to this gray valve. Gently remove the small hard line on the other side of the valve from the rubber vacuum connector (the larger rubber connector -the hard line is the small, thin hard vacuum line running horizontal behind the box to the actual resonator valve). Firmly install the hard line in the rubber elbow that supplies vacuum and voila.
For those who don't know, this vacuum source on our cars is constant, provided by a dedicated vacuum pump that works at all times to provide on demand vacuum for various applications including the PSE valves, the resonator valve and so forth. I've not seen an instance yet where this vacuum source is interrupted so this would keep the resonator valve closed at all times.
.
You can bypass the resonator vacuum distributor control solenoid and plug the incoming source vacuum line directly into the vacuum line running to the resonator valve itself. The easiest way to accomplish this is to unclip the distributor solenoid from the airbox (it's the small gray solenoid on the back of the airbox). Then, remove the rubber vacuum elbow where it connects to this gray valve. Gently remove the small hard line on the other side of the valve from the rubber vacuum connector (the larger rubber connector -the hard line is the small, thin hard vacuum line running horizontal behind the box to the actual resonator valve). Firmly install the hard line in the rubber elbow that supplies vacuum and voila.
For those who don't know, this vacuum source on our cars is constant, provided by a dedicated vacuum pump that works at all times to provide on demand vacuum for various applications including the PSE valves, the resonator valve and so forth. I've not seen an instance yet where this vacuum source is interrupted so this would keep the resonator valve closed at all times.
.
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