Exhaust for street and track
08-01-2005, 03:27 PM
#31
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pstoppani: Well 'Waldo' isn't here yet. He should be by next weekend. We should get together once I am back with 'Waldo'. So how about selling me those muffler-by-pass pipes? 
08-01-2005, 05:32 PM
#32
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The droning of the bypasses depends on the position of your head ;-)
No, really this is true. Move your head up or down and forth and back. For me it does make a huge difference in drone and loudness of the car.
Perhaps taller people hear them louder than smaller drivers????
No, really this is true. Move your head up or down and forth and back. For me it does make a huge difference in drone and loudness of the car.
Perhaps taller people hear them louder than smaller drivers????
08-01-2005, 05:53 PM
#34
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Originally Posted by ca993twin
Lots of people report the droning with the bypasses, but lots of others (including me) never found that to be true.
You're old and deaf
Actually Waldo never did drone. and I've been in him many times. On the other hand, Frankencar, hoo boy!
Go figure.
Lots of people report the droning with the bypasses, but lots of others (including me) never found that to be true.
You're old and deaf
Actually Waldo never did drone. and I've been in him many times. On the other hand, Frankencar, hoo boy!
Go figure.
08-01-2005, 06:27 PM
#35
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Originally Posted by ca993twin
Stummel,
I like that theory, being a smaller driver that does not hear the droning. We need lots of statistical samples. Who else?
I like that theory, being a smaller driver that does not hear the droning. We need lots of statistical samples. Who else?
However, I'm getting GT3 seats so it will be interesting to see if they have an effect...
08-03-2005, 12:51 PM
#36
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After more street driving, the drone is really only between 2800 and 3000 rpm. I tried moving my head as someone suggested, no effect. Anyway, by keeping out of that RPM range, the sound is quite nice!
08-03-2005, 05:30 PM
#37
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Originally Posted by 911/Q45
There is this gauge in the middle of the dash that tells you when to shift, I thinks it's called a tachometer.
08-03-2005, 05:38 PM
#38
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Originally Posted by pstoppani
I believe the difference is in the people, not the cars. I've driven cars that people say don't drone, but they did to me. I've come to know and accept that I'm more sensitive to low frequencies than others.
FWIW, if I can't feel the sound in my molars it isn't resonating!
08-03-2005, 05:40 PM
#39
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Originally Posted by pstoppani
However, I'm getting GT3 seats so it will be interesting to see if they have an effect...
08-05-2005, 12:09 PM
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Just got back from the track where I really liked the muffer bypass; I could actually hear the RPMS!
But, it is too loud for daily use for me, so back goes the stock muffler. It was a nice experiment and proved that if there was a muffler that had a bypass flap for track days, I'd be in heaven!
But, it is too loud for daily use for me, so back goes the stock muffler. It was a nice experiment and proved that if there was a muffler that had a bypass flap for track days, I'd be in heaven!
08-09-2005, 02:10 AM
#41
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Pete, I think there are some inserts available that you can use to quiet the car down a bit.
For me, the car sounds just fine with bypasses but then again I'm a little deaf. The bypasses wont pass sound at Laguna but I had some turndowns made and wallah, they pass.
For me, the car sounds just fine with bypasses but then again I'm a little deaf. The bypasses wont pass sound at Laguna but I had some turndowns made and wallah, they pass.
08-10-2005, 05:34 PM
#42
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muffler bypass workes great for me, the only time it slightly resonates is on initial start up where it sounds really mean, then goes away when warm. not annoying at all on the road tho-just lets you know what the engine is doing like you want. They should work. you will be surprised how civil they are (at speed) for having no mufflers...bueaty of haivng turbos and cats still.
08-10-2005, 07:23 PM
#43
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Originally Posted by icerbofh
Pete, I think there are some inserts available that you can use to quiet the car down a bit.
For me, the car sounds just fine with bypasses but then again I'm a little deaf. The bypasses wont pass sound at Laguna but I had some turndowns made and wallah, they pass.
For me, the car sounds just fine with bypasses but then again I'm a little deaf. The bypasses wont pass sound at Laguna but I had some turndowns made and wallah, they pass.
08-13-2005, 03:01 AM
#44
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Here is the movie of me running with a Carrera GT and a GT3 with the muffler bypasses; you can view the movie I posted previously for differences in sound.
God that GT is gorgeous! Sounds good too...
God that GT is gorgeous! Sounds good too...
08-13-2005, 03:10 PM
#45
Originally Posted by Stummel
perhaps a muffler with a flap/tab? sorry, don't know the word.
in german it is "Klappen-Auspuff".
Ruf makes those for the 993n/a. Perhaps someone makes them for the turbo?
It is like a stock muffler at low RPMs and like a muffler bypass at higher RPMs.
Best of both world, with no annoyed neighbors but fun at the track.
in german it is "Klappen-Auspuff".
Ruf makes those for the 993n/a. Perhaps someone makes them for the turbo?
It is like a stock muffler at low RPMs and like a muffler bypass at higher RPMs.
Best of both world, with no annoyed neighbors but fun at the track.
But perhaps they have another solution for the Turbo?!