本品为 宝马6系F12 F13/X5 E70/X6 E71 N55发动机车型专用 美国Race Spirit改装涡轮后段Downpipe 排气头段/BMW F12 F13 E70 E71 Race Spirit Downpipe

　　产地：美国　　　　车型：宝马6系F12 F13 640i/X5 E70 35i/X6 E71 35i N55发动机车型专用 　　　　安装：替换原车排气头段　　　　性能提升：轮上19匹马力！

　　在美国它的名称为Downpipe，它位于车辆涡轮的末端，同时又是排气的最前端，因此将原厂的Downpipe更换为口径更大的Downpipe可以带来更多的性能提升。同时它还可以有效地改善涡轮启动时所带来的延迟！此外，即使在不更换原车排气的情况下，它也可以令排气的声音变得更加动听而有力！是涡轮车型最简单有效的改装配件之一！

　　Race Spirit Inspired Tuning introduces the one and only 3.5" Catless downpipe for the F10 & X5 N55 platform - Made completely in the USA from 304 stainless steel. Dynojet numbers show an increase of 19WHP and 18WTQ – a 6.5% increase over stock (HUGE increases at 3500rpm of 24wtq & 36wtq). This direct bolt-on exhaust pipe eliminates the primary catalytic converter relieving pressure behind the turbo. This decrease in pressure allows the turbo to spool more efficiently causing an increase in performance and better fuel efficiency during low throttle driving. You can audibly hear the difference as the turbo spool becomes more present and turbo lag is practically eliminated. For off-road use only. Note currently there is no DPFIX available for the F10 and X5 N55 models and this downpipe will trigger a small "service engine soon" light in dash.

　　如有疑问欢迎致电查询：(工作时间) 010-63870600 / (非工作时间)13911376792
　　实体店地址：北京市丰台区丰管路16号西国贸汽车基地A2-1038(西三环丰益桥十字路口西南角)

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