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Here’s a sound and video clip of the Dinan Free Flow Exhaust system (available from www.bavauto.com) installed on an F10 BMW 535i.
Click below for Dinan 535i Performance Exhaust:
Here’s a sound and video clip of the Dinan Free Flow Exhaust system (available from www.bavauto.com) installed on the F85 X5M nad F86 X6M.
Click below for Dinan X5M & X6M Performance Exhaust:
The new, and nasty, BMW M4 GTS is certainly a mean machine. But, did you know that a major part of the technology that leads to its lofty horsepower numbers is traced directly back to BMW’s airplane engine development in the 1940s?
The M4 GTS S55 twin-turbo engine manages to jump from the “normal” 425-hp to its MWP (Maximum War Power) of 493-hp through the use of water injection. This is not unlike the systems developed in the ’40s, known as MW50 (Methanol,/Water, 50/50) for aircraft engines. The water is injected into the intake manifold, cooling the turbocharger compressed (and heated) intake air. This allows; more advanced ignition timing and/or more turbocharger boost pressure to be used without detonation (knock, ping). The system is used only under full power, as the engine management system determines the need. Water for the injection is stored in a tank under the trunk floor and is pumped to the engine.
Check out this video showing the basic principles of the water injection system on the S55.