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Another mod that doesn’t directly contribute to horsepower but lowers the chances of detonation is this JLT 5.0-liter billet oil catch can (PN JLTOSP-FMG11; $119). The sleek part captures oil vapors before they can enter the induction and pollute the air/fuel mixture. JLT’s kit is plug and play, as it comes preinstalled on the factory tubing with the factory connections. Just remove the stock PCV hard line and replace it with the JLT unit.