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The 7 Fastest N54's in the World: 135i, 335i, 535i Horsepower Records
The 7 Fastest N54's in the World: 135i, 335i, 535i Horsepower Records Even 11 years after the N54 engine was originally debuted, horsepower world records are still being set constantly. We have been waiting for the first 900hp N54, and one company claims to have broken this barrier. Today we are bringing you a post of