decibel level inside your car science project!!!
02-26-2010, 01:16 AM
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decibel level inside your car science project!!!
Would you state the brand of your exhaust and post the decibel level check at IDLE, HARD ACCELERATION and CRUISE SPEED[ 75mph ]. Also post the MAX decibel level recorded in your car. You may want to elaborate on the decibel level changes with some other components but try to be right on the money and be as precise as possible. It will vary on some different surfaces but maybe take 3 measurements, add them up, divide by three to get an average in each category. This will give us a point of view which exhaust is the most quiet and the loudest. If you don't have access to a decibel meter download an application for yours or your friends Iphone.
02-26-2010, 09:08 AM
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If you stay within the guidelines in my thread and do the test 3 times it will give you some sort of average. We assume the hard acceleration and a cruise test would be done on the interstate at 75 miles per hour. So the remaining idle test would not make a drastic difference. As for the tires and rims and any other equipment you may elaborate on it in the extra remarks to the test. Naturally lets keep the sunroof and the windows up since it is the sound test of the interior. I think this will help the exhaust manufacturers to fine tune their products after seeing those results.
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02-26-2010, 09:16 AM
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See guys, this is a mark of a professional. He is not afraid of the test cause he is confident about the product. It would be just as interesting for them as suppliers to hear the results from the other members with the same exhaust. It helps the manufacturer to further define the product for commercial purposes.
02-26-2010, 10:17 AM
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Greg. Why do care about this? You just made holes in your exhaust and if there is an exhaust to your liking. Will you spend the money to buy it. You just went against your own dam word of not spending money. Not to mention you trashed the stock exhaust
Last edited by g37RN; 02-26-2010 at 10:22 AM.
02-26-2010, 01:58 PM
#13
I got a decibel meter and you are missing no less than three varible settings. Are you looking for the A-scale or C-scale readings? Do you know the difference in the scales? Fast response or Slow responce? High or Low range dB readings?
Using the iPhone to check dB reading is like using my c**k as a ruler.
Using the iPhone to check dB reading is like using my c**k as a ruler.
02-26-2010, 02:25 PM
#15
If you stay within the guidelines in my thread and do the test 3 times it will give you some sort of average. We assume the hard acceleration and a cruise test would be done on the interstate at 75 miles per hour. So the remaining idle test would not make a drastic difference. As for the tires and rims and any other equipment you may elaborate on it in the extra remarks to the test. Naturally lets keep the sunroof and the windows up since it is the sound test of the interior. I think this will help the exhaust manufacturers to fine tune their products after seeing those results.
Tires "hum", and are tuned for noise. Lou can tell you. Invo vs NT05 anyone? MASSIVE difference.
As for idle, even an open header wouldn't be super loud at idle. Louder than your typical exhaust? yes. Excessive on a production street car? no.
The only way to get consistent results is to eliminate the variables. E.g. All tested on the same car, similar weather, same tires (and level of wear on tires)