Thread: m3 vs x5m?
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      04-21-2013, 11:03 PM   #34
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2008 e92 M3  [5.00]
Originally Posted by ToothDoc
M5 and M6 have higher compression and higher boost already. Because they already come maxed out, you won't get much from a tune. The X5M has lower compression to start with so possible can get more boost no?

I have one and thinking of doing a software upgrade, but what's another 75 hp when you already have 555 and the thing weighs 5500 pounds? .1 second to 60? .3 at the 1/4? Not worth destroying the warrantee over.
A tune on a turbo engine usually makes a lot more for the enjoyement of driving then what it looks on the 0-60 numbers! I had plenty of turbo cars and a tune always made miracles!
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