02-10-2016, 07:45 PM | #90 | |
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I think if BMW had put so much as upgraded wiper blades on the M2 it would be in that marketing material they published as a "Technical Training Document" Why would they leave out an upgraded turbo, but mention the wastegate and other small things. I hope I'm wrong, but I'm being realistic here. |
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02-10-2016, 07:48 PM | #91 | |
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02-10-2016, 07:56 PM | #92 | |
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Some of these guys are clueless. I went to a driving event last week and asked for a Manual or DCT car. They had three M3 and an M5. BMW REP: "We don't have any manuals, only automatics here today" ME: "What about a DCT, don't you have a car with a DCT" BMW RE: "No, only automatics. Which one would you like to drive?" |
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02-10-2016, 07:56 PM | #93 |
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This manual is a goldmine. It has shop manual-like detail but without the assembly/disassembly steps.
Fascinating to read.
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02-10-2016, 07:59 PM | #94 |
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02-10-2016, 08:22 PM | #95 |
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http://f87.bimmerpost.com/forums/sho....php?t=1184123
This is the thread I was talking about. Nothing really here but the same rumors and arguments. |
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02-10-2016, 08:27 PM | #96 |
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"Overboost:
On the N55B30T0 engine, the torque is increased from 465 Nm/343 lb-ft to 500 Nm/369 lb-ft (overboost) by a brief increase in the charging pressure of 0.1 bar above the normal charging pressure." Does this equals to more horsepower as well, or only more torque?. I donīt get how those two are not related Thanks |
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02-10-2016, 08:55 PM | #97 |
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It's because the boost tapers before peak horsepower is hit. So there will be greater area under the HP curve but not a greater peak number because that happens near or at redline still.
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02-10-2016, 08:56 PM | #98 | ||
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No details known yet about that MPPK for the M2, but it may push the official hp figure close to, or even beyond, the 400hp barrier. So BMW must have left enough room for some extra oomph.
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02-10-2016, 08:59 PM | #99 | |
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02-10-2016, 09:01 PM | #100 | |
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02-10-2016, 11:19 PM | #101 | |
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02-11-2016, 02:57 AM | #102 | |
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I wonder if this is getting muddled up with the lifting of the top speed limiter in the 'M drivers package' perhaps. |
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02-11-2016, 04:35 AM | #103 | |
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I am no expert but how could you otherwise manage to extend the power so high in the RPM-range as compared to the engine in the M135/235i? Could the boost curve be set so it does not hold itīs power as high in the rev range in the M235i for example? Usually I believe you do that to avoid excessive heat or because the turbo can not flow enough air at high RPMs du to itīs characteristics. Perhaps someone who knows how M135/235 responds to SW tuning can comment. Br |
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02-11-2016, 05:16 AM | #104 | |
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As a reference I have a SoftWare flash tune on my car and it holds power to 6500rpm no worries with peak power at 6300rpm. Not sure what that tells us. FBO with software 365HPATW.... familiar number !
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Last edited by chaddy74; 02-11-2016 at 05:24 AM.. |
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02-11-2016, 05:40 AM | #105 | |
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M-power>M-performance |
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02-11-2016, 06:00 AM | #106 | ||
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02-11-2016, 10:20 AM | #107 |
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But I just showed you were it is, in fact, nothing near 10%...for any of the motors in question. AKA, you're factually incorrect.
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02-11-2016, 10:21 AM | #108 |
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It is on the other N55s as well.
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02-11-2016, 10:27 AM | #109 | |
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As posted, peak HP might not increase, because the extra torque (and accompanying extra HP) is produced at a lower RPM and doesn't exceed the peak HP.
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02-11-2016, 10:30 AM | #110 |
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