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BMW 3-Series (E90 E92) Forum
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Increasing throttle response via Valvetronic Motor Mod?
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09-10-2018, 01:51 PM | #23 | |
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Version III is not "potential" it is already used in N55 engine. |
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09-10-2018, 01:53 PM | #24 | |
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The version 3 of Valvetronic which N55 uses, has done away with the eccentric shaft sensor. The sensor is integrated with the motor, or it is just the sensor of the motor itself. It is bathed in oil, inside the engine. |
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09-10-2018, 02:05 PM | #25 |
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sounds like they've gone to a sensored brushless motor then.
Generally they use magnets and hall effect sensors, but they may not be precise enough. Might be some sort of encoder wheel and optical things, but that doesn't seem to play well in oil. I'd be curious to disassemble a gen 3 motor and see what's doing in there. |
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09-10-2018, 02:15 PM | #26 |
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Yah I realized this after rereading your post.
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09-10-2018, 03:47 PM | #27 | |
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09-10-2018, 03:52 PM | #28 | |
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09-10-2018, 06:51 PM | #29 |
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So I think the next progression would be to see some n55 logs and see how they compare with N52 in the time to open the valvetronic.
That would give some insight I think? Last edited by Biginboca; 09-10-2018 at 07:11 PM.. |
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09-10-2018, 09:23 PM | #30 |
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....
Last edited by gT-BMW; 09-10-2018 at 10:48 PM.. Reason: everybody has a goal |
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09-11-2018, 05:27 AM | #31 |
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The Turbo "spool" mode may affect how the DME reacts to rapid torque requests. Things get more complicated when the engine has special maps for rapid turbo spool up. Should have special Fuel maps, Vanos maps, fuel maps and such.
I'm still learning how these work. |
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