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M57 twin turbo - swirl flaps
M57 twin turbo - swirl flaps
Hi guys my car has done 192k miles on a 2009 35d. The swirl flaps have not been removed, do I really need to remove as I hear they the would be a slight loss in power and economy.
M57 twin turbo - swirl flaps
Not sure where you have heard that but the swirl flaps only really activate when your at tick over.......