Is whistling when flooring the S4 a little normal? (at a test drive)
06-27-2003, 10:15 PM
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Is whistling when flooring the S4 a little normal? (at a test drive)
I have no experiance with turbo, so is that normal? I test drove it and heared a little whistling sound...
I had an earlier post about a 2K1 S4 with 17K miles....
I had an earlier post about a 2K1 S4 with 17K miles....
06-27-2003, 10:19 PM
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Yes.
It should be something like the sound you hear from turbo'd 18-wheelers. You can play it: pitch changes with throttle position. My car makes more noise till it's warmed up.
A little high-pitched whistling is normal. Loud screeching or a tea-kettle sound is not.
HTH-
-df
A little high-pitched whistling is normal. Loud screeching or a tea-kettle sound is not.
HTH-
-df
06-27-2003, 10:21 PM
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I cant say it is loud, but I can hear it well. Can the 90+ degrees have anything to do with it? is..
is it waste-gas or waste-air? or do i not know what i am talking about 
??
??
06-28-2003, 07:59 AM
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It's the number of turbine blades X the turbo RPM
that produces the audible whistle. As the blades pass the housing exit, they "thwap" the gas. It goes above the range of human hearing at higher RPMs.
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