Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors).
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The new Evolution exhaust system consists of newly developed dual-outlet mufflers with exhaust valves, flow-optimized pipes, and a unique cast titanium X-shaped part with resonators.
The new Evolution exhaust system consists of newly developed dual-outlet mufflers with exhaust valves, flow-optimized pipes, and a unique cast titanium X-shaped part with resonators