Why do many port fuel injected engines use long intake runners? ...

[kwoodring]

Why do many port fuel injected engines use long intake runners?
 
  A) To heat the incoming air B) To increase high RPM power
  C) To increase low RPM torque D) To reduce exhaust emissions

Question 2

Why are the EGR gasses cooled before entering the engine on some engines?
 
  A) To prevent damage to the intake valve.
  B) To help prevent the exhaust from slowing down.
  C) To prevent heating the air-fuel mixture in the cylinder.
  D) Cool exhaust gas is more effective at controlling NOx emissions.

[djofnc]

Answer to Question 1

C

Answer to Question 2

D