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#131
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The only speed that matters is the one on the officer's device...
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
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#132
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Basically I look at the gps software's reading and then see how far off the speedometer is and then go with it from there.
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Just BMW's - All cars and trucks was two pages long 1994 318is 1997 528i 2000 323i 2001 X5 3.0 auto 2005 X5 3.0 auto 2011 535xi auto 2013 X5 xdrive35 Turbo More are at my website Aftermarket E53 Radio Install |
#133
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#134
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I was kidding...
Interesting that your law would side with the GPS though. I never want to test that here - and anway, it seems like prevention might be better than a cure in this case!
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#135
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They get speeds showing of 70 to 80 mph when Im going 45 mph. The logging feature proves it by showing a long log of readings covering the times in question. They even did some test the following week out of curiosity and sure enough the readings were 20mph or more faster than actual speed. Heck they clocked it doing 25 mph once while parked. Weird. We never have figured out what causes it.
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Just BMW's - All cars and trucks was two pages long 1994 318is 1997 528i 2000 323i 2001 X5 3.0 auto 2005 X5 3.0 auto 2011 535xi auto 2013 X5 xdrive35 Turbo More are at my website Aftermarket E53 Radio Install |
#136
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Some more thoughts on the temp gauge/sender--I'm thinking that the 2 sides of the sender are used to give a more linear and accurate reading through a broader range. The DME side(higher resistance) is used for the upper range and the gauge side(lower resistance) is used for the lower range. Information is exchanged on the bus between the DME and the cluster. If one side fails the other is used to get close and if both fail the air charge sender(and mapping) gets used. This seems to be what's going on from what I have been able to find out. So, accurate and robust, and nice that BMW is using actual temps in the coding instead of digital voltages from the DACs. I haven't done any coding for the warning light temp but will mess around a bit more when I do.
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) |
#137
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Digital Competition Systems The older I get... The faster I was... No Fear |
#138
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As the speedo part of this thread is getting off topic, I've started a new thread to chase that up...
https://xoutpost.com/bmw-sav-forums/...ffset-fix.html
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#139
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Was tempted to set it much lower, say 90C, just to see it go off and verify the functionality but I thought that might cause other issues with the DDE so I decide no to risk it. Might look at how we could simulate the high temp reading via resistive substitution of the sensor - which of course, 80stech has already proven on the low cluster, using the same method.
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#140
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Second sensor in a cup of oil heat to 115C with a lighter. Or simply determine the Ω range and use a potentiometer. (Miss difficult to do with 3-lead sensor)
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
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