The 3.2-liter S52 inline-six has been modified with a Turner Motorsports Stage 2 tuning kit consisting of an aFe cold-air intake, 24-lb fuel injectors, a Porsche mass air flow sensor, and Shark Injector engine control software.Recent maintenance have included an oil change, replacement of the fuel sending unit and gasket, and installation of an AGM battery and an aFe air filter.Additional under-hood modifications include a BimmerWorld throttle body boot, CFS Plus high-capacity radiator, BimmerWorld 16″ SPAL puller fan, and a Stewart high-performance water pump.Removed factory parts are included in the sale.Power is sent to the rear wheels through a five-speed manual transmission and a limited-slip differential.The leather-wrapped steering wheel frames a 160-mph speedometer, a tachometer, and auxiliary gauges.The digital odometer indicates 164k miles.