Tag Archives: ESS

Black Sapphire M4 Image 15 750x500

Black Sapphire BMW M4 Gets A Tune and A Drop

BMW M4, Models, Tuning | December 12th, 2014 by Vanja Kljaic

When BMW released the F80 M3 and F82 M4 engine specifications, we immediately knew that the power gains the tuning companies could achieve will be …

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