If you are an N54 powered BMW 135i owner, then you already know how much fun two turbos mated to an inline 6 cylinder German engine can be.
You also know you’re ready for more. One of the easiest way to add some extra horsepower and efficiency to your late model BMW is with a drop-in panel filter.
This piece improves many different aspects of the N54 135i’s engine performance, at an affordable price.
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