5.7L 10-15 average RWHP gain over stock.6.1L 15-20 average RWHP gain over stock.No tune required, but recommended. JLT COLD AIR INTAKE FOR 2005-2020 5.7L & 2005-2010 6.1L HEMI CARSSKU: CAI-DH05 $260.00PriceOut of Stock