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I've been looking to buy an X5M for a few months now and coming from a supercharged E46 M3 and fully built 335 I've been reading similar threads like this one about different types of tunes for the X5M...the only thing I've noticed is everybody is basically doing the same setup...a tune and down pipes or a tune with an exhaust...has anybody upgraded their intercoolers or replaced the stock turbos etc. to bring out the full potential of these beasts??? I know a lot of guys want to keep it simple for warranty concerns but those of you out of warranty...has anybody gone beyond the basic tune???
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