11-30-2016, 07:15 AM | #1 |
im a car
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Drives: 220i M Sport | 520i M Sport
Join Date: Jul 2008
Location: Hong Kong
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Double Upshifting
This is something that's been happening for a long time but never bothered me too much, but wondering why it happens. If I put the gearbox in full manual DS mode, and floor it from 1-2, and press the shift paddle myself, the car will shift twice instead of just once, and I end up in 3rd gear instead. It only happens when flooring it/shifting at higher rpms. Am I trying to shift at too high a RPM or something?
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12-02-2016, 11:54 AM | #3 |
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Same happens to me. Just a computer preventing you from messing up i guess. If tranny is in Sport mode and I manually upshift, it will do it twice....1st to 2nd done by the car and 2 to 3rd done by you as computer takes over and has priority over you.
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12-02-2016, 01:14 PM | #4 |
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Can you clarify one thing for me please? So you push the shifter to the left, and that's makes it D/S. Do you then press the paddles to make it fully manual before you start to drive? Because from what I understand and experience on my car, if I don't touch the paddles while the car is in D/S, it will still shift by itself but at a higher rpm. Sometimes I leave the car in D/S and start driving. If I then try to upshift myself at a high rpm while the transmission is also going to shift, I get a double shift. As the poster above me said the computer takes priority. This is what I think you're experiencing. Try making the car fully manual before you start driving and see if it happens again.
Sorry if this post is not coherent. Running on 3 hours of sleep and no coffee |
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12-19-2016, 11:38 AM | #5 |
NewFinishColumbia/detailer
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Maybe the car is trying to keep the engine in the torque sweet spot.
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12-19-2016, 04:01 PM | #6 |
Monkey
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It happens to me too, but only during WOT after the acceleration click (not sure if that's the best phrase to describe it...). I always assumed that because the car has 8 gears the maximum power band is smaller per gear. Therefore the car automatically detects the most optimal gear for the power band and will shift so that the power delivery is consistently smooth.
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