michael ku 不过要我说嘛...用invidia最多的就属subie车主了，我可没见evo什么的哪个车主有用过invidia（说的R400），个人认为就为了4出好看...并不值得，价钱...呵呵卖的比tomei钛合金还贵，然而作为sti车主其他subaru车主全部用要不invidia就是nameless，但是我就是用单筒大粗炮钛合金，不比四出霸气多了。（讲真我觉得invidia和nameless...我看着跟原厂没啥区别...
Exhaust wraps are simple and relatively cheap mod which in theory work on a simple proposition i.e. keep the exhaust gases heated till they pass out of the exhaust system. This proposition works in several ways to improve the performance of the bike. By insulating the exhaust pipes including the headers, mid section and the end, the exhaust gases are not allowed to cool as they pass through the system. As the exhaust gases are hot, their density is less, thus allowing the gases to travel faster through the exhaust system. As the speed of the exhaust gases is higher, there is better scavenging of the combustion chamber. Due to the better scavenging effect, the fresh charge fills the combustion chamber more efficiently. At another level, as the heat front the exhaust gases is not being allowed to radiate out throughout the exhaust pipes all the areas in the vicinity of the exhaust pipes routing run cooler thereby promoting a cooler running engine. 英文补充
