宝马3系 升级Velocita（威洛斯蒂）-VE智能5G全段排气系统

传承七代驾驶乐趣继续辉煌。新一代B系列2.0T涡轮增压发动机与8速手自一体自动变速箱的黄金动力组合，动力水平全面提升，至高400牛米扭矩迸发强劲性能，进一步优化的能效带来更低油耗。豪华驾趣，当仁不让

Inherit seven generations of driving fun and continue to be brilliant. The new generation B series 2.0T turbocharged engine and 8-speed automatic manual transmission are the golden power combination. The power level is comprehensively improved. The torque is up to 400nm, and the further optimized energy efficiency brings lower fuel consumption. Luxury driving funBMW 3系原车排气系统的声浪不是很完美，很多车友都会选择升级一套高性能排气系统，Velocita-VE高性能排气系统在减轻车辆的同时还提升了排气声浪成为了真正的接下来就带大家一起来欣赏这台3系的改装案例让你感受一下真正完美的声浪

The sound wave of the original BMW 3 Series exhaust system is not very perfect. Many riders will choose to upgrade a set of high-performance exhaust system. Velocita-ve high-performance exhaust system not only reduces the vehicle, but also improves the exhaust sound wave. Next, let's take you to enjoy the refitting case of the 3-Series, so that you can feel the real perfect sound waveVelocita采用不锈钢(SS304)，秉承精细优质的特点，无论从焊点还是到切割，VE团队把每一个细节都做到淋漓尽致。Velocita adopts stainless steel (SS304), adhering to the characteristics of fine quality, no matter from solder joint to cutting, ve team makes every detail incisively and vividly.减轻整车重量的同时，提升了动力增强声浪，原车Sport（运动模式）控制阀门开关While reducing the weight of the vehicle, it improves the power and enhances the sound wave. The original car sport controls the valve switch排氣系統中的大部分阻力都來自於三元催化器，尤其在國內進入新的國六排放標準，原廠車由於對排放的標準十分嚴謹，往往會增加頭段上觸媒的數量而且使用阻力較大的陶瓷催化使聲音更加難以釋放。所以在更換排氣時，三元催化頭段的改裝也是需要著重考慮的。Most of the exhaust system resistance comes from the ternary catalysts, especially in the domestic into six new countries emissions standards, original car because of emissions standards is very rigorous, tend to increase the number of head section on the catalyst and the use of larger resistance ceramic catalytic make sounds more difficult to release. So in replacing exhaust, ternary catalytic modification of the first paragraph is also need to think about it.頭段的功效主要來自其中的三元。相對來說，三元越密過濾尾氣的效率越高，同時消音效果也越好，但弊端是發動機廢氣排放不暢，缸內會殘留部分廢氣，降低缸內含氧量從而限制部分動力。

The effect of head section mainly from three yuan. , three yuan are relatively dense filter exhaust efficiency higher and higher, at the same time the silencing effect is better, but the disadvantages are poor engine exhaust emissions, will remain part of exhaust gas in cylinder, the lower cylinder containing oxygen limiting part.