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· COTM Winner
2014 Cruze Diesel, 2007 Cobalt, 1981 Camaro Z28, 2017 Volt
7,228 Posts
Boost is a measure of restriction. Less restriction equals lower boost and more volume therefore more power.
Yes. The 2.5" SS/TC exhaust combined with the mid-length header and 2.5" downpipe on my Cobalt dropped me a couple psi - but the car is quicker/more powerful as a result.
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