Bi-turbo
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« on: June 04, 2014, 01:53:21 AM »
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S4 B5 with 551C
Fitted new MAP sensor OEM
Still getting low atmosphirc reading 650mbar at idel when it should be as close to 1000mbar as possible
Is there a senor on the ecu bord itself that mesures the altitude?
If so were is it? im at work and have a 551C open at home so i can look later
Thanks
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nyet
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« Reply #1 on: June 04, 2014, 12:33:11 PM »
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Is there a senor on the ecu bord itself that mesures the altitude?
If so were is it? im at work and have a 551C open at home so i can look later
Yes, there is. I don't have a P/N handy but i will look it up time permitting. |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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ddillenger
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« Reply #2 on: June 04, 2014, 04:22:18 PM »
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It is very distinctive. it is white, and square. Only thing on the top of the board that is white and square-lol
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
DDillenger84(at)gmail(dot)com
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Bi-turbo
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« Reply #3 on: June 07, 2014, 08:41:53 AM »
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Think i've found it, it has two holes in it one on a corner and the other in the opposite corner
I'm getting 650mbar from the atmospheric reading with vcds and 1000mbar from the new Map sensor and a -35% altitude correction.
Does that mean that the ecu is taking the 1000mbar reading from the Map sensor and seeing the 650mbar from the atmospheric sensor and correcting it by 35% to bring it inline?
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tjwasiak
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« Reply #4 on: June 07, 2014, 01:00:57 PM »
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Your ECU just sees constantly 0,35 bar of boost ATM.
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Bi-turbo
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« Reply #5 on: June 09, 2014, 12:42:03 PM »
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No that makes no sense
It boosts fine and drives fine as the Map sensor reads correctly.
The -35% is an altitude correction factor which means its taking the map sensor's reading and correcting the atmospheric sensor's reading
Altitude sensor reads 650mbar
35% of 1000mbar = 350mbar + 650mbar =1000mbar so the -35% is the ecu correcting the altitude sensor because it using the Map sensor's reading as correct
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Bi-turbo
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« Reply #6 on: July 02, 2014, 08:21:53 AM »
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The number on what i belive to be the altitude sensor is
961
A83941B
022
Can anyone confirm this?
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Jesper Rs4
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« Reply #7 on: August 24, 2014, 08:33:14 AM »
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Where Can i read the altitude sensor values? I use vcds.
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Jesper Rs4
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« Reply #9 on: August 24, 2014, 09:06:40 AM »
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Sorry, i mean the sensor inside ecu
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Bi-turbo
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« Reply #10 on: August 24, 2014, 01:14:51 PM »
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The altitude sensor that is on bord itself is read on VCDS genuine copy
Should read 1000mbar or as close to.
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gremlin
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« Reply #11 on: August 25, 2014, 04:08:43 AM »
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The altitude sensor that is on bord itself is read on VCDS genuine copy
Here is datasheet for this sensor |
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Bi-turbo
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« Reply #12 on: August 26, 2014, 01:52:57 AM »
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Nice, were did you get that from
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