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Old 07-24-2010, 09:41 PM
erm
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Those are all good questions.

The internal combustion engine is just a big air pump. More air in and more air out (intake & exhaust) improve efficiency and power.

A tuner will optimize fuel curves, spark timing and a few other key parameters to take advantage of the new air flow in and out of the engine.

Those mods, an intake - an exhaust - a tuner, are the basic three most cost effective mods that net a great return on your investment.
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