Quote:
Originally Posted by Suberman
Does the BRZ have knock sensors? If it does then the engine won't make more power in cold weather.
Turbo engines do if they are intercoolers.
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That's all wrong.. Knock sensors are there to sense knock and retard ignition should knock occur. Cold air is denser and supplies more air in the same volume of space for more complete combustion and therefore makes more power.
The engine timing will be the same unless there is knock. So the colder the intake charge, the more complete the combustion will be and more power will be made. Knock sensors don't come into play unless there is detonation to some degree.. Then timing would be pulled and less power made. It works the same for NA or FI, cold air packs more air in a given space for better combustion which in turn creates more power.