06-05-2014, 08:40 AM | #1 |
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M4 vs B3 alpina biturbo acceleration
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06-11-2014, 07:54 PM | #4 |
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So m4 with a tune would really pull away from B3...but stock for stock close.
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06-11-2014, 07:54 PM | #5 |
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M4 is a not that much faster but very cool alpine numbers
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06-11-2014, 07:55 PM | #6 | |
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06-11-2014, 08:17 PM | #9 | |
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06-11-2014, 08:26 PM | #10 | |
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Quote:
http://en.m.wikipedia.org/wiki/Alpina
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06-11-2014, 08:28 PM | #11 |
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Interesting. That m somehow seems to just get up and go quicker. But defiantly would love to see what a nice tune would do on an m4.
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06-11-2014, 09:24 PM | #13 |
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maybe if the B3 had a better Trans( M-dct ) _OR_ had the equivalent weight as M4
( i believe the M4 is 100kg lighter) they would end up as tie.
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06-11-2014, 09:59 PM | #15 |
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06-11-2014, 10:03 PM | #16 |
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Seems to be about a second behind above 100kph, which is pretty big at those speeds. Several carlengths.
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06-11-2014, 10:24 PM | #17 |
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06-11-2014, 10:31 PM | #18 |
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Phrase it how you want but the Alpina runs an engine from the BMW factory but with a tune different (here, more aggressive) than that of the factory. If the M4 were to be in the same category, and thus be equipped with a tune more aggressive than that from the BMW factory, this race would not be as close. Nevertheless, this video goes to show that the Alpina is damn fast.
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06-11-2014, 11:26 PM | #20 | |
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The M4 engine produces less torque at lower rpms and more torque at higher rpms compared to the B3 bi-turbo engine. It would be fair to assume that the B3 engine runs higher boost than the M4 engine, but is less de-throttled. I wouldn't know if the turbos are actually the same though. They could also have been taken from the N54 engine I guess... |
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06-11-2014, 11:28 PM | #21 |
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06-11-2014, 11:45 PM | #22 |
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In 2nd gear, the M4 seemed to get stuck a bit at 5500 rpms then farted and kept going. It was strange. Lose traction?
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