Check out this android app if you want to play with how temperature affects the speed of sound.
Speed of Sound Calculator
I have the equation somewhere if anyone is interested.
This is a discussion on Does the winter weather increase exhaust drone? Increase power? within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; Check out this android app if you want to play with how temperature affects the speed of sound. Speed of ...
V= 331m/s + (0.6m/s/C * T)
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Also, sounds like overall that cold air may increase vibration/resonance/sound a little. But definitely increases power. Is there a calculator out there for the power increase with a given temperature?