I am not sure whether it is a good idea to have sound of turbo-charged engine. But apparently someone thought it was a good idea to make such a product - Turbo Whistler!

It may sound abit gay, moron, pathetic, unconvincing, even complete piece of shit to you... whatever you call it. But this product probably able to trick all of your friends into thinking your car is turbo-charged... Watch the Turbo Whistler in action in the video.