is it true that lower temps will require less boost. cause when the weather got cold i dont hold between 8-9 . now its like 6-7 pounds of boost.

thanks

 

Cold air is more dense then warm air so therefore it compresses less. i.e. less boost. Even with less boost you are still putting more air into your engine.

 

Me confused... wouldnt what meradin siad mean the opposite or am i reading it wrong??? Other than his explination (which would make sense, im just confussed about the application) i would have no clue as to what to do.

 

thanks for the explanation, i was talking about this with other people and they said that it was true but couldent really explain why.

 

Colder air is denser than warmer air. This means you have more oxygen molecules for same about of air when the air is colder. For example an intake charge with a temperature of 90 and 8 psi of boost may put the same amount of oxygen in your engine as and intake charge with a temp of 50 and only 6 psi of boost.