Originally posted by Billy4774
1. What's a throttle body
2. What's a BOV do?
3. I just changed the oil in my car, do I need to "break it in"?
4. 200,000 miles are on it, what kinda checks ups should I do?
5. When does VTEC kick in?
6. What are the main preformance differences between sohc and dohc?
7. I'm not totally sure on this, but doesnt a crankshaft move the pistions up and down?
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/