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Originally Posted by p-streets
Thanks for info guys I'm just going to stick with the green drop in filter and stock intake thanks for all advice. Next investment will be a limited slip dif I hear that's best bang for ur buck o yea
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If u have an 09 m3, ur in for a treat. The car comes with a limited slip differential straight from the factory. No need to get one unless ur looking into a different type of LSD.