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While the standard E46 M3 used a naturally aspirated inline-6, BMW Motorsport believed a bespoke 4.0-liter V8 engine would be perfect to give it a competitive edge against Porsche on the racetrack.

There have been many superb BMW specials over the years ... ruins their appeal. The E46 M3 CSL is one of those icons, a car that was defined not just by its driving experience, but the irritating ...