Performance Myths.

Many people claim to know how to make an engine perform better claims from running motorcycle carbeurators to fuel additives to "cold air intakes".... while some of these may result in minimal gains for the most part they are a waste of time.

Engine modifications net the best results when they are designed to work together. That huge air filter and over sized cold air intake gets you nothing if your engine is still wheezing through a throttle body the size of thimble. Like wise huge exhaust and a free-flowing muffler do nothing for a car that has restrictive factory headers and exhaust valves caked in carbon buildup. Every engine is an air pump. The more air and fuel it can pass per cycle the more power it makes.