JLT CAI AND TUNER/TUNE SHOULD BE 1ST... DO NOT BUY ANY INTAKE FOR THE S197 CARS THAT DOES NOT REQUIRE A TUNE, THAT MEANS THE INTAKE ACTUALLY ISNT MAKING ENOUGH OF A CHANGE IN AIR COMING INTO THE MOTOR FOR THE CAR TO EVEN NEED TO CHANGE ANYTHING, AKA, ITS DOING NEXT TO NOTHING!! KEY IS GETTING A COLD AIR THAT IS NOT MADE OF HEATSINK PRONE METAL, AND THAT DOES REQUIRE A TUNE, AKA, IT'S REALLY GIVING THE CAR MORE AIR, AND A TUNE IS REQUIRED, YOU CAN GAIN AS MUCH AS 30 REAR WHEEL HORSEPOWER WITH A GOOD CAI AND EVENA GOOD MAIL ORDER TUNE!! FYI - WHEN THE S197 FIRST CAME OUT, THE JLT TRUE COLD AIR INTAKE WON ALMOST ALL COMPAROS DONE BY THE MAGS... AND, sorry about the caps, i just looked up and seen my whole post in caps..lol