Originally posted by TeHJuSTiN
Since 1 & 2 were skipped over I'll go ahead and answer them.
1. A throttle body lets the air into the intake manifold which is where the air/fuel is mixed before it's combusted.
2. A blow-off valve releases the compressed air once the throttle body closes.
http://auto.howstuffworks.com/
I skipped over them for a reason. Look it up on the internet.
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