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The F10 M5 Dinan high flow carbon fiber cold air intake
In order to achieve the best performance
Dinan's unique muffler design effectively reduces back-pressure for improved flow
While not explicitly required
The secondary air inlets also allow the intake system to be more audible so the turbo spool and BOV can be appreciated
Dinan Underdrive Crankshaft Pulley Kit - BMW M5/M6 RADG The F10 M5 Dinan highDinan's lightweight billet aluminum crankshaft pulley underdrives each of the accessories by 13 percent, reducing parasitic drag on the engine for a 6 HP @ 8000 RPM and 4 lb ft torque @ 8000 RPM gain on a stock vehicle. The Dinan underdrive pulley retains the factory harmonic crankshaft damper, eliminating vibration that might otherwise damage the crankshaft. The kit includes all of the necessary mounting hardware, lightweight pulley, and shorter