1999 Pontiac Trans Am SLP Performance Parts Test - Trans Slam
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When we tested SLP's 375HP Pac (Jan. '07, HPP) we gained 21 rwhp but were only up to 372 flywheel horsepower. SLP's Pacs are based on the '01 and '02 LS1s, which sport the LS6 intake as standard issue, so we wanted one too. Here's the original LS1 intake (before the swap), equipped with the ugly EGR tube located right behind the throttle body. View Related Article
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