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      03-16-2007, 03:05 PM   #59
turbojet3
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Drives: E92 335
Join Date: Dec 2006
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For the first time in a 3 Series model, the 335i Coupe's dual exhaust system runs at both sides of the vehicle - logical, as each contains its own turbocharger turbine and therefore requires extra space. At low loads, a flap channels most gas through one side to reduce low-frequency exhaust "rumble." The 335i Coupe features an air-to-oil external oil cooler mounted in one wheel well as opposed to the N52's coolant-to-oil unit.


this is from the BMW press release 8-2006