Vacuum and performance
Intermediate
Joined: Jul 2013
Posts: 42
Likes: 0
From: Mooresville North Carolina
Vacuum leaks tend to have a larger effect on performance at idle and low speed. Function of percentage of volume. They also depend on the type of system. Carburetors and Mass Air systems show the effect of air/fuel ratio upset while Speed Density(Map Sensor) show the effect on idle speed (high).
