Custom User Defined Values Possible?
#1
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,293
Total Cats: 475
Custom User Defined Values Possible?
I have a MS3 PRO. I remember back in the day, you could make up a variable, like for example Vehicle speed = Input 5 / 533, and it would display the new variable as a function of that one.
I just can't seem to find where you do this in TunerStudio.
I am going to add a fuel pressure sensor, and what I want to do is define a new variable called Fuel Pressure_Corrected. It will be:
Fuel Pressure Corrected = Fuel Pressure Measured (in kPa) + (-101kPa + MAP Sensor Measured kPa)
And deal with units.
But this would take the fuel pressure changes due to MAP fluctuations out and thus this new "corrected" fuel pressure should always be constant. I will be running a 1:1 Fuel pressure regulator with vacuum reference hooked up.
I just can't find where to enter a user-defined variable in TunerStudio, surely you can still do this?
I just can't seem to find where you do this in TunerStudio.
I am going to add a fuel pressure sensor, and what I want to do is define a new variable called Fuel Pressure_Corrected. It will be:
Fuel Pressure Corrected = Fuel Pressure Measured (in kPa) + (-101kPa + MAP Sensor Measured kPa)
And deal with units.
But this would take the fuel pressure changes due to MAP fluctuations out and thus this new "corrected" fuel pressure should always be constant. I will be running a 1:1 Fuel pressure regulator with vacuum reference hooked up.
I just can't find where to enter a user-defined variable in TunerStudio, surely you can still do this?
#3
Supporting Vendor
iTrader: (33)
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
I'm not sure I see the usefulness, but you can add custom math fields like this in MegaLogViewer.
MegaLogViewer HD - Formulas
But if I felt like I had a fuel pressure issue where the same load/rpm zone would not result in consistent pressure, I would build a scatter plot of MAP vs RPM vs fuel pressure and look for a trend line/outliers.
MegaLogViewer HD - Formulas
But if I felt like I had a fuel pressure issue where the same load/rpm zone would not result in consistent pressure, I would build a scatter plot of MAP vs RPM vs fuel pressure and look for a trend line/outliers.
#4
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,293
Total Cats: 475
Basically I just wanted to be able to calculate a corrected fuel pressure, one that should always be constant, and set an output on my ECU so that if it drops (like my filter is dirty, or pump is weak or not big enough up top), a warning light would turn on showing me this in realtime. If MS3 PRO doesn't do this, that's ok, but I thought it did hence why I posted... I see MLV does it but that's not gonna do what I'm looking for. I guess I'll just rely on a AFR output and not worry about fuel pressure.
#5
Supporting Vendor
iTrader: (33)
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
I see. You're looking to add a math operation as a conditional output. Sorry, that is not currently supported.
However check the Fuel Pressure Safety System -- it works with the AFR safety system. I believe that it outputs to the check engine light when triggered. I think that is exactly the feature you're looking for, but without the fuss of setting up a math operation channel.
However check the Fuel Pressure Safety System -- it works with the AFR safety system. I believe that it outputs to the check engine light when triggered. I think that is exactly the feature you're looking for, but without the fuss of setting up a math operation channel.
#7
Elite Member
Thread Starter
iTrader: (16)
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,293
Total Cats: 475
No big deal. Unrelated question, but on a MS3 PRO, what is the lowest current rating of any of the outputs? I'm building a warning system and plan to use the outputs to ground an LED, so surely nothing over 100ma, probably less. Seems all the outputs are 3A or more?
Thread
Thread Starter
Forum
Replies
Last Post