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The tests I've seen show really no gains without an intake upgrade and that's on V8s so a little six? Probably nothing worth mentioning.
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2018 SS wheels, red Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, front grille Bowtie delete, painted red rotors and calipers, 1/4 window American Flags, splash guards, AEM dry panel air filter.
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