Forced induction
When you add a turbocharger or a supercharger, you’re making more power
by forcing more air from the atmosphere into your engine.
Think of a turbocharger or supercharger as a fan that is blowing compressed
air into your engine. The more air you give your engine, the more power your
engine can give you (if you also add the right amount of fuel and spark). The
extra air adds oxygen so you can burn more fuel. But if you want a reliable,
drivable car with a turbocharger or a supercharger, you must make sure all
of the parts of your entire car work together.
The decision to use nitrous oxide may depend on how long you want to use
the extra power:
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A turbocharged or supercharged car can run on the track at full power
until the gas tank is empty.
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A nitrous oxide system has a limited boost time before you have to
return to the mother ship and refill; when you’re out of nitrous oxide,
your car is a 98-pound weakling again.
You must consider whether all of the engine, driveline, and chassis parts can
handle big power increases. Chapter 16 covers the basics of making your car
tough enough.
Some companies are known for over-engineering their designs; others are
not. When your buddy with a late-model Toyota Supra tells you how easily
and seamlessly his car transitioned from its stock 300 hp to 600 or 800 hp
with minimal fuss, don’t assume that your 100 hp Kia or Hyundai can cope
as gracefully with 200 or 300 hp.