Under normal circumstances: No. S is suitable for the displacement of 1.0-1.6, and the diameter of exhaust pipe port is-43mm<about 69g> No. M is suitable for the displacement of 1.6-2.0, and the diameter of exhaust pipe port is 37-48mm<about 87g> No. L is suitable for the displacement of 2.0-2.4, and the diameter of exhaust pipe port is 44-55mm<about 106g> XL is suitable for displacement above 2.4, exhaust pipe port diameter 56-85mm<about 135g> Name: car modification turbine whistle exhaust pipe sounder imitation sound device turbine exhaust imitation sound whistle Specifications: small, medium, large, large, 4 models The above price is a small price, please contact customer service for other specifications! Easy to install, beautiful and elegant, very fashionable, low cost, it is used to decorate my car. This product has 4 models of small, medium, large and large size. The length of the product is only the length of the whistle, excluding the length of the holder. About Size Selection:/Please first/Please measure the inner diameter of your car's tailpipe, Compare with the size shown in the following figure, and see which one fits your own car; On the premise of proper installation size, try to choose a larger size. Sound similarity: the sound made by the real turbo pressure relief valve is usually made by ". And this whistle sounds like "SH, SH", which is more inclined to the whistle we play everyday. After all, it is a few pieces of sound imitation device. Technically, it cannot be imitated to be the same as the real one. It can only be like this Non-product quality problems do not accept return
