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Feb 15, 2001 | 01:21 PM

mcneal

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Boost

What does "BOOST" mean? do? What part does it play with performance?

Feb 15, 2001 | 02:04 PM

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Boost

Boost is the amount of air pressure that a blower, (supercharger or turbocharger), supplies to the intake of an engine. Boost is normally measured in pounds per square inch. The more boost supplied to an engine, the more fuel that you can force into the engine, hence, the more horsepower you create. Boost can be controlled in several ways. We control and raise the boost on Powerstrokes with the aftermarket Performance Chips. This is how we increase the horsepower. More air+more fuel=more horsepower.
This pressure, boost, is proportional to engine rpm. Turbochargers use exhaust to spin a blower to create boost. Superchargers are belt driven. Turbochargers have what is called "turbo lag". This is the lag time, at idle, before the exhaust can spin the blower enough to create boost. Superchargers have very little if any lag, since they are belt driven.
Thanks
Danny

Feb 15, 2001 | 02:11 PM

alanscott

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Boost

Boost refers to the rate of increased air forced into an engine over standard atmospheric pressure from an external compressor. The compressor could be in the form of a turbo or a belt/gear driven super charger. The engine burns fuel and air at a measured ratio, when you can force more air into the engine, you can then burn more fuel with that air, achieving higher power output.

alanscott

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