Intake noise on cold startup
#1
Prodigal Wankler
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Intake noise on cold startup
Now that I've got a few hundred miles on the clock, I've noticed that when I first start it from cold in the morning, there is a distinctly different sound from the intake. It's a sort of hollow, "open throated" sort of noise, sounding rather like a leak, and it goes away abruptly after about 20 seconds or so.
I assume it's because the system is opening a more direct intake tract which bypasses the muffling of the air filter assembly, but only when the engine is below a certain temperature. (Though here in Texas it's never going to be "stone cold" - our current overnight lows are in the mid-70's.)
Curious, and I thought worthy of a comment. Has anyone else noticed this behaviour?
I assume it's because the system is opening a more direct intake tract which bypasses the muffling of the air filter assembly, but only when the engine is below a certain temperature. (Though here in Texas it's never going to be "stone cold" - our current overnight lows are in the mid-70's.)
Curious, and I thought worthy of a comment. Has anyone else noticed this behaviour?
#2
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Join Date: Mar 2003
Location: Dallas, TX
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I noticed the same thing this weekend, and I too am in Texas. Not sure Texas has anything to do with it though.
I'll be interested to see if anyone else has heard this.
I'll be interested to see if anyone else has heard this.
#3
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Join Date: Oct 2002
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I love that sound! I always start with the door open these days to hear it! :D For me it's a kind of air rush sound with the engine gulping for air. Sounds quite sexy to me, like a V8 drawing breath or something - not like a leak. Doesn't last more than a few seconds though.
#4
Prodigal Wankler
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Originally posted by JSG
I love that sound! Sounds quite sexy to me, like a V8 drawing breath or something - not like a leak.
I love that sound! Sounds quite sexy to me, like a V8 drawing breath or something - not like a leak.
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