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Loud Exhaust Drone at old start ups

At cold start the Exhaust has a loud drone but it goes away after about 20-30 seconds. I have a friend that has a Nismo and his cold start is

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Old 09-21-2010, 11:31 PM   #1 (permalink)
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Default Loud Exhaust Drone at old start ups

At cold start the Exhaust has a loud drone but it goes away after about 20-30 seconds. I have a friend that has a Nismo and his cold start is the same. Is this normal for these cars

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Old 09-22-2010, 12:43 AM   #2 (permalink)
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Yup quite normal. No need to worry about it
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Old 09-22-2010, 01:31 AM   #3 (permalink)
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yea completely normal. i believe at a cold start up the car idles higher, making it warm up quicker. and the exhaust note is noticeable louder during this time too.
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Old 09-22-2010, 05:12 AM   #4 (permalink)
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Perfectly fine...You'll learn to love it when you have an aftermarket exhaust and you go out early in the morning before the sun is out to warm it up before you go to work....Your neighbors will hate it though
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Old 09-23-2010, 09:59 AM   #5 (permalink)
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Ok, so no need to panic. Thank you all
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Old 09-23-2010, 10:02 AM   #6 (permalink)
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