Xede live data - can I see Boost?
Check this page for a number of MAP sensor options. You will still need a voltage regulator to drop +12v to +5v, or tap into the ECU's 5v output.
http://www.roadraceengineering.com/ems.htm
Note that RRE has the GM sensor for $60 w/ connector.
http://www.roadraceengineering.com/ems.htm
Note that RRE has the GM sensor for $60 w/ connector.
Originally Posted by donour
What I meant was, you can use the RPM reading to correlate different data sources if RPM is available. If you just have a pressure reading and timestamp, it's not so easy. Again, I'm sure you realize this. The original points stands (and I agree with it); it'd be easier to have the reading available to the xede directly.
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From: NorCal
Originally Posted by freedom
Check this page for a number of MAP sensor options. You will still need a voltage regulator to drop +12v to +5v, or tap into the ECU's 5v output.
http://www.roadraceengineering.com/ems.htm
Note that RRE has the GM sensor for $60 w/ connector.
http://www.roadraceengineering.com/ems.htm
Note that RRE has the GM sensor for $60 w/ connector.
I did notice that RRE has that sensor, but they also say it's not that great. I'm sure it will be fine for simple datalogging, maybe they just mean it wasnt reliable enough to tune the AEM with. But who knows what will be necessary to hookup the AEM sensor, the GM looks simple.
So, someone buy a sensor and hook it up to AN2 in the XEDE and let us know what happens
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From: NorCal
Originally Posted by donour
Well, if you're using SMART it might be difficult. If not, AN0 is chiptorque/vishnu's stadard location for a 0-5v MAP sensor. You could wire it there then datalog and/or view it on the live data display.
I suppose you could also use it as a the load variable for the boost table and get closed loop boost control all the time.
EDIT: for those of you who've never used my software ( or gotten it to work
),
I have this table buried in it. It's a list of the inputs/outputs that are available from software on the Xede.
("Engine RPM" ,"100rpm resolution"),
("Crank timing out (tuned timing shift)","0 = -max?; 128 = 0?; 255 = +max?"),
("Analog 0 input (MAP)" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Analog 1 input (MAF)" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Analog 2 input (TPS)" ,"0..1000 = 0..100.0% of full scale (5V),"),
("(unused)" ,"" ),
("Boost solenoid input duty cycle" ,"0..1000 = 0..100.0% duty cycle (active low),"),
("Reserved / temporary input 0" , "" ),
("Reserved / temporary input 1" , "" ),
("Reserved / temporary input 2" , "" ),
("Reserved / temporary input 3" , "" ),
("Analog 0 output (MAP) tuned" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Analog 1 output (MAF) tuned" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Analog 2 output (TPS) tuned" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Injector channel 0 output pulse width","0..255 = 0..25.5ms on-time"),
("Injector channel 1 output pulse width","0..255 = 0..25.5ms on-time"),
("Knock attenuate state" ,"0 = not attenuated, 1 = attenuated"),
("Boost solenoid output duty cycle" ,"0..1000 = 0..100.0% duty cycle (active low),"),
("Internal 3.3V power supply" ,"675 = 3.3V (approximately),"),
("Internal 5.0V power supply" ,"512 = 5.0V (approximately),"),
("Input power supply voltage" ,"491 = 12V (approximately),"),
("Timing logic version" , "" ),
("Timing logic build" , "" ),
("Timing logic track ID" , "" ),
("MAF input percentage (frequency MAF)" ,"0..1000 = 0..100.0%"),
("MAF output percentage (frequency MAF)","0..1000 = 0..100.0%"),
("Water spray state" ,"0 = not activated, 1 = activated"),
("Tuning data checksum" ,"Periodically updated (1-2 seconds),"),
("Map info" , "Low byte = current map bank number Bit 15 = 'changing map bank
s' flag")
d
I suppose you could also use it as a the load variable for the boost table and get closed loop boost control all the time.
EDIT: for those of you who've never used my software ( or gotten it to work
),I have this table buried in it. It's a list of the inputs/outputs that are available from software on the Xede.
("Engine RPM" ,"100rpm resolution"),
("Crank timing out (tuned timing shift)","0 = -max?; 128 = 0?; 255 = +max?"),
("Analog 0 input (MAP)" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Analog 1 input (MAF)" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Analog 2 input (TPS)" ,"0..1000 = 0..100.0% of full scale (5V),"),
("(unused)" ,"" ),
("Boost solenoid input duty cycle" ,"0..1000 = 0..100.0% duty cycle (active low),"),
("Reserved / temporary input 0" , "" ),
("Reserved / temporary input 1" , "" ),
("Reserved / temporary input 2" , "" ),
("Reserved / temporary input 3" , "" ),
("Analog 0 output (MAP) tuned" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Analog 1 output (MAF) tuned" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Analog 2 output (TPS) tuned" ,"0..1000 = 0..100.0% of full scale (5V),"),
("Injector channel 0 output pulse width","0..255 = 0..25.5ms on-time"),
("Injector channel 1 output pulse width","0..255 = 0..25.5ms on-time"),
("Knock attenuate state" ,"0 = not attenuated, 1 = attenuated"),
("Boost solenoid output duty cycle" ,"0..1000 = 0..100.0% duty cycle (active low),"),
("Internal 3.3V power supply" ,"675 = 3.3V (approximately),"),
("Internal 5.0V power supply" ,"512 = 5.0V (approximately),"),
("Input power supply voltage" ,"491 = 12V (approximately),"),
("Timing logic version" , "" ),
("Timing logic build" , "" ),
("Timing logic track ID" , "" ),
("MAF input percentage (frequency MAF)" ,"0..1000 = 0..100.0%"),
("MAF output percentage (frequency MAF)","0..1000 = 0..100.0%"),
("Water spray state" ,"0 = not activated, 1 = activated"),
("Tuning data checksum" ,"Periodically updated (1-2 seconds),"),
("Map info" , "Low byte = current map bank number Bit 15 = 'changing map bank
s' flag")
d
$50 boost gauge is the hot ticket. Only takes 15 minutes to install. I have mine mounted in the slot under the climate controls.
Last edited by Jeff_Jeske; Sep 12, 2005 at 04:52 PM.
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From: NorCal
Originally Posted by Jeff_Jeske
$50 boost gauge is the hot ticket. Only takes 15 minutes to install. I have mine mounted in the slot under the climate controls.
I think he's onto something here!
The original thread is about a guy who doens't have a boost gauge.....he wants to know how much boost he is running.....the fastest fix is INSTALL BOOST GAUGE.
If you want to try to invent something that can do all those things be my guest but this isn't the place.
If you want to try to invent something that can do all those things be my guest but this isn't the place.
Evolving Member
Joined: May 2005
Posts: 354
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From: NorCal
Originally Posted by Jeff_Jeske
The original thread is about a guy who doens't have a boost gauge.....he wants to know how much boost he is running.....the fastest fix is INSTALL BOOST GAUGE.
If you want to try to invent something that can do all those things be my guest but this isn't the place.
If you want to try to invent something that can do all those things be my guest but this isn't the place.
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Joined: Aug 2005
Posts: 24
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From: Chicago
Does anyone know what pin AN2 is on the Xede harness. I installed the GM sensor (part# 12223861) which works great, but I'm having to use AN0 as the input (pin 9 on Grey connector), which is supposed to be for the SMART knock buffer.
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From: NorCal
Originally Posted by MAX711
Does anyone know what pin AN2 is on the Xede harness. I installed the GM sensor (part# 12223861) which works great, but I'm having to use AN0 as the input (pin 9 on Grey connector), which is supposed to be for the SMART knock buffer.
Someone correct me if i'm wrong, but AN2 should be the TPS sensor, which the XEDE doesent use, which is the Purple wire in one of the harnesses. Look for the XEDE firmware update instructions, the purple wire that they tell you to cut is the unused TPS input. use that one and see if it works.
Also let us know how you hooked up the GM sensor, how it works, and where you got it. and can you post up a datalog of it?
THANKS!
Ok, so I am going to ask a potentially reaallly stupid question here, but ... would it not be possible to tap into the signal of an electronic boost gauge (like, for example, the Omori boost gauge)? I am assuming that it already sends an electric signal (most likely 0-5V, which could be tested easy enough) to the gauge, which then displays the appropriate boost level...
l8r)
l8r)
Originally Posted by Sackett
Wow cool!
Someone correct me if i'm wrong, but AN2 should be the TPS sensor, which the XEDE doesent use, which is the Purple wire in one of the harnesses. \
Someone correct me if i'm wrong, but AN2 should be the TPS sensor, which the XEDE doesent use, which is the Purple wire in one of the harnesses. \
d
Originally Posted by Ludikraut
Ok, so I am going to ask a potentially reaallly stupid question here, but ... would it not be possible to tap into the signal of an electronic boost gauge (like, for example, the Omori boost gauge)? I am assuming that it already sends an electric signal (most likely 0-5V, which could be tested easy enough) to the gauge, which then displays the appropriate boost level...
l8r)
l8r)
Now you're getting me itchy for a complete logic diagram of the Xede hardware.
d
The map sensor I have has a voltage regulator attached which requires 12V. If I want to run the map signal to the UTEC to control boost, it requires the typical 5V input. Can I tap the MAP signal wire before it sees the regulator, and then run it to the UTEC?
