By far, the best way to increase air flow, yet reduce noise is to increase the size of the fan. This is because at a given volume of air being moved, the smaller the area it is in, the more pressure which then results in vibration as it pressure drops again, which we then hear as noise. So, when you increase the size of the fan, it will tend to move some more air, yet cause a lower pressure immediately by the blades.
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It's not a car, it's an addiction.
The only carb that matters is under the hood.
There's an option for most vehicles that increases brake horsepower, increases mileage, increases driver control, lasts longer than the alternative, and even reduces the price of the vehicle. Despite all this, most people in this country choose the alternative, an automatic transmission.
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