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Originally Posted by 2014bmwf07
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New improved formula developed for BMW engines. Fuel System Additive can help: Clean deposits from fuel injectors intake ports, intake valves and combustion chambers. Restore lost fuel economy, power and performance. Clean and protect against sulfur corrosion that can harm fuel gauge sensors.
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This won't work on direct-injected engines as the fuel doesn't go through the intake ports or over the valves. It may help with the injectors, but a good quality (Top Tier) fuel will do the same.