eshion Universal Car Turbo Sound Whistle Exhaust Muffler Pipe Simulator, M - Blue Made of high quality and light weight aluminum Make your vehicle sound like a turbo vehicle with the turbo system or blow off valve Easy installation Fitment: Universal fitment for all vehicles models About the size to choose: First, please measure your car exhaust pipe Inside diameter . Different size of Simulator Whistler , the sound is different, before buying, please confirm the inner diameter of the exhaust port