EMU Question, Converting Fuel Map
#1
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Thread Starter
EMU Question, Converting Fuel Map
I noticed that my current map(inj 1 and inj2) were tuned by using the stock map sensor voltage(not sure why my tuner neglected the greddy map). I would like to use the greddy sensor, however i do know from research that voltage/psi is not the same for both sensors.
Here are some of the equations i have found on S2ki, from mugenrios2k and dsddcd....
Stock Map Sensor
psi=5.395*volts-15.37
or
volts=(psi*15.37)/5.395
Greddy Map Sensor
psi=14.5*volts-21.75
or
volts=(psi+21.75)/14.5
My current plan is to make each column its own independent line(y=mx+b).. and figure out what the appropriate voltage would be for the greddy map sensor.
Does anyone else have a better method?
-thanks in advance
-Lu
#2
How is this?
V Stock..........PSIG...................V Greddy
3...................0.8089....................1.55 6
3.25..............2.157725.................1.649
3.5...............3.50655................... 1.742
3.6...............4.04608................... 1.779
3.7...............4.58561................... 1.816
3.8...............5.12514................... 1.853
3.9...............5.66467................... 1.891
4..................6.2042..................... 1.928
4.1...............6.74373................... 1.965
4.2...............7.28326................... 2.002
4.3...............7.82279................... 2.040
4.4...............8.36232................... 2.077
4.5...............8.90185................... 2.114
4.7...............9.98091................... 2.188
4.8...............10.52044................. 2.226
5..................11.5995................... 2.300
Greddy V vs Press
V.....................PSIG
0.5..................-14.5
0.7..................-11.6
0.9..................-8.7
1.1..................-5.8
1.3..................-2.9
1.5..................0
1.7..................2.9
1.9..................5.8
2.1..................8.7
2.3..................11.6
2.5..................14.5
2.7..................17.4
2.9..................20.3
3.1..................23.2
3.3..................26.1
3.5..................29
V Stock..........PSIG...................V Greddy
3...................0.8089....................1.55 6
3.25..............2.157725.................1.649
3.5...............3.50655................... 1.742
3.6...............4.04608................... 1.779
3.7...............4.58561................... 1.816
3.8...............5.12514................... 1.853
3.9...............5.66467................... 1.891
4..................6.2042..................... 1.928
4.1...............6.74373................... 1.965
4.2...............7.28326................... 2.002
4.3...............7.82279................... 2.040
4.4...............8.36232................... 2.077
4.5...............8.90185................... 2.114
4.7...............9.98091................... 2.188
4.8...............10.52044................. 2.226
5..................11.5995................... 2.300
Greddy V vs Press
V.....................PSIG
0.5..................-14.5
0.7..................-11.6
0.9..................-8.7
1.1..................-5.8
1.3..................-2.9
1.5..................0
1.7..................2.9
1.9..................5.8
2.1..................8.7
2.3..................11.6
2.5..................14.5
2.7..................17.4
2.9..................20.3
3.1..................23.2
3.3..................26.1
3.5..................29
#3
Registered User
Thread Starter
Originally Posted by dsddcd,Nov 11 2009, 08:11 AM
How is this?
V Stock PSI V Greddy
3 0.8089 1.556
3.25 2.157725 1.649
3.5 3.50655 1.742
3.6 4.04608 1.779
3.7 4.58561 1.816
3.8 5.12514 1.853
3.9 5.66467 1.891
4 6.2042 1.928
4.1 6.74373 1.965
4.2 7.28326 2.002
4.3 7.82279 2.040
4.4 8.36232 2.077
4.5 8.90185 2.114
4.7 9.98091 2.188
4.8 10.52044 2.226
5 11.5995 2.300
V Stock PSI V Greddy
3 0.8089 1.556
3.25 2.157725 1.649
3.5 3.50655 1.742
3.6 4.04608 1.779
3.7 4.58561 1.816
3.8 5.12514 1.853
3.9 5.66467 1.891
4 6.2042 1.928
4.1 6.74373 1.965
4.2 7.28326 2.002
4.3 7.82279 2.040
4.4 8.36232 2.077
4.5 8.90185 2.114
4.7 9.98091 2.188
4.8 10.52044 2.226
5 11.5995 2.300
the EMU will not let me use values like...
1.64....
they have to be in .05 increments...
#5
Registered User
Thread Starter
sooo...
this is what i would input?
Sotck volts PSIG.... V Greddy Input value
3.............. 0.8089...... 1.556....... 1.55
3.25......... 2.157725.. 1.649....... 1.65
3.5........... 3.50655.... 1.742....... 1.75
3.6........... 4.04608.... 1.779....... 1.75
3.7........... 4.58561.... 1.816....... 1.8
3.8........... 5.12514.... 1.853....... 1.5
3.9........... 5.66467.... 1.891....... 1.9
4.............. 6.2042...... 1.928....... 1.9
4.1........... 6.74373.... 1.965....... 1.95
4.2........... 7.28326.... 2.002....... 2
4.3........... 7.82279.... 2.04......... 2.05
4.4........... 8.36232.... 2.077....... 2.5
4.5........... 8.90185.... 2.114....... 2.1
4.7........... 9.98091.... 2.188....... 2.15
4.8........... 10.52044.. 2.226....... 2.2
5.............. 11.5995.... 2.3........... 2.25
this doesnt make sense to me as there will we 2 rows that will have duplicate values.
sorry to bother you. I just want to make sure i do this right.
BTW the tuner used the same stock voltage values.
this is what i would input?
Sotck volts PSIG.... V Greddy Input value
3.............. 0.8089...... 1.556....... 1.55
3.25......... 2.157725.. 1.649....... 1.65
3.5........... 3.50655.... 1.742....... 1.75
3.6........... 4.04608.... 1.779....... 1.75
3.7........... 4.58561.... 1.816....... 1.8
3.8........... 5.12514.... 1.853....... 1.5
3.9........... 5.66467.... 1.891....... 1.9
4.............. 6.2042...... 1.928....... 1.9
4.1........... 6.74373.... 1.965....... 1.95
4.2........... 7.28326.... 2.002....... 2
4.3........... 7.82279.... 2.04......... 2.05
4.4........... 8.36232.... 2.077....... 2.5
4.5........... 8.90185.... 2.114....... 2.1
4.7........... 9.98091.... 2.188....... 2.15
4.8........... 10.52044.. 2.226....... 2.2
5.............. 11.5995.... 2.3........... 2.25
this doesnt make sense to me as there will we 2 rows that will have duplicate values.
sorry to bother you. I just want to make sure i do this right.
BTW the tuner used the same stock voltage values.
#7
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Originally Posted by dsddcd,Nov 11 2009, 10:04 AM
At 3.7 volts Stock you should use 1.85 V Greddy
4 volts should also be 1.95
4.4 should be 2.10
4.7 should be 2.2
Luis who taught you math? LOL
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#9
Registered User
Thread Starter
Sotck volts PSIG.... V Greddy Input value
3.............. 0.8089...... 1.556....... 1.55
3.25......... 2.157725.. 1.649....... 1.65
3.5........... 3.50655.... 1.742....... 1.75
3.6........... 4.04608.... 1.779....... 1.75
3.7........... 4.58561.... 1.816....... 1.85
3.8........... 5.12514.... 1.853....... 1.85
3.9........... 5.66467.... 1.891....... 1.9
4.............. 6.2042...... 1.928....... 1.95
4.1........... 6.74373.... 1.965....... 1.95
4.2........... 7.28326.... 2.002....... 2
4.3........... 7.82279.... 2.04......... 2.05
4.4........... 8.36232.... 2.077....... 2.1
4.5........... 8.90185.... 2.114....... 2.1
4.7........... 9.98091.... 2.188....... 2.2
4.8........... 10.52044.. 2.226....... 2.2
5.............. 11.5995.... 2.3........... 2.25
So the duplicate values wont matter.... let me upload my map
3.............. 0.8089...... 1.556....... 1.55
3.25......... 2.157725.. 1.649....... 1.65
3.5........... 3.50655.... 1.742....... 1.75
3.6........... 4.04608.... 1.779....... 1.75
3.7........... 4.58561.... 1.816....... 1.85
3.8........... 5.12514.... 1.853....... 1.85
3.9........... 5.66467.... 1.891....... 1.9
4.............. 6.2042...... 1.928....... 1.95
4.1........... 6.74373.... 1.965....... 1.95
4.2........... 7.28326.... 2.002....... 2
4.3........... 7.82279.... 2.04......... 2.05
4.4........... 8.36232.... 2.077....... 2.1
4.5........... 8.90185.... 2.114....... 2.1
4.7........... 9.98091.... 2.188....... 2.2
4.8........... 10.52044.. 2.226....... 2.2
5.............. 11.5995.... 2.3........... 2.25
So the duplicate values wont matter.... let me upload my map