The Extreme 2.2L and 4.3L are tight, well-built stock engine.
But its still just a stock engine and has a potential
for more horsepower. Buying a Volant kit will increase
the air charge and in effect increase the horsepower.
Also sustaining a cooler air charge from the outside
air increases the density of the air which gives the engine
more oxygen in more dense air - and more oxygen means a more
efficient burn, longer engine life, and better gas mileage.
Volant's PRO-5 Filter reduces air restriction and increase
s engine output by using precision pleat geometry that optimizes
airflow throughout the intake system. The PRO-5 gets its name
from its 5 protective layers, 4 cotton and 1 synthetic, It comes
pre-oiled and can last for up to 150,000 miles if properly maintained.