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Originally Posted by slow4.7
that is why im asking on here ..im new to bmw, and the whole forum world...thanks anyways
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Well first of all you need to learn how turbos work, and then youll realize how these tunes make your car faster. They simply crank up the turbo boost(theres much more to it than that, but that for the power part).
Please spen atleast a couple of months researching before buying any tune for your car. Youve come to the right forum, there are soo many threads on here, just start reading and reading!!