They're worth it on GTP's. You get more supercharger whine, and with forced air induction, you may see a bit more HP. They're nearly a waste of time on N/A engines.
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05-17-2013
They're worth it on GTP's. You get more supercharger whine, and with forced air induction, you may see a bit more HP. They're nearly a waste of time on N/A engines.
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