Dinan 15-18 BMW M3 Air Filter AU-0018 Extensive testing on the street

Extensive testing on the street and at the track has enabled us to develop custom systems that have been tuned for optimum performance while avoiding the foibles of typical "big brake kits

we embarked on comprehensive research and rigorous testing

The factory mid-pipe restricts exhaust flow and contributes to the high-pitched “weed eater” tone often associated with the S55 engine

making it perfect for dynamic road conditions and aggressive driving styles

Dinan 15-18 BMW M3 Air Filter AU-0018 Extensive testing on the streetWhile factory paper filters function admirably, they can be restrictive to performance goals given the material used. They also require being replaced numerous times during the lifespan of the vehicle, which can add up to a substantial amount in maintenance costs. Limited performance and increased maintenance costs are never ideal but can be resolved effectively and economically in the case of filters. Dinan High Flow Drop in Replacement Filters are