VRSF N54 Aluminum Turbo Outlet Charge Pipe Upgrade Kit 07-13 BMW 135i/335i/535i/Z4/1M E82/E88/E89/E90/E92/E60Increase throttle response, free up horsepower and decreases turbo lag with our high flow VRSF aluminum turbo outlet charge pipe kit for your N54. The OEM turbo outlet necks down to less than 1 at the merge collector which creates a significant bottle neck on both stock and aftermarket turbos. Our 2 high flow outlets remove that restriction which not only offers an increase in HP but also allows the turbos to work more efficiently which reduces