Thread: Air intake muffler delete on a Pontiac Sunfire
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Old 07-30-2011, 02:29 PM   #20 (permalink)
moorecomp
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Autospeed has a great 5 part article on this. It shows that reducing the differential between atmospheric and intake (not manifold) pressure does have an effect on performance at less than WOT.

Eliminating Negative Boost
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