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An early step for most enthusiasts is a free-flowing inlet. For the heavy breathing Trinity 5.8, Lethal chose JLT's Big Air 127mm CAI (PN CFCAI127-GT500-10; $469) with the optional paint matching. It seems it was a little early in the game for this combo, as peak output nudged up by 3.35 hp and 1.64 lb-ft of torque. Based on our own work with PVT, we know this system excels as the boost goes up, so it definitely will help as Lethal turns up the wick.