Hi guys i have made a few posts in here before, i started out bad from the get go with a POS palm tungsten T3 ( i dont know why its on the compatibility list as it only stays connected for 5 second increments ). But the weather here is starting to turn around and i started back on the project by picking up a palm m500 for free and luckily it used the same hotsync cable as the T3.

I have read through the AFR tunning thread and found some very good information, and i think i will switch to map based timing and put in AGRX's map once i figure out some of the basics.

but today i spent hooking up my innovate wideband Lc-1 to the ecu. i found the correct analog output wire and soldered it to another wire and soldered that wire to the ecu. and also unplugged my variable resistor. i plugged the palm in and went to the log screen and clicked "VR analog " or something like that, and clicked ok. it wasn't displaying in correct afr format which i expected but when i tried to scale it the values wouldnt stay. I would click calculate and Okay but when the values were the same i went back to the scaling screen and the data i put in was gone.

i put in 0v= 9afr 5v= 19afr. A little help on this problem would be appreciated

- Shane

 

arghx *

 

bump. i know someone has had this problem !

 

Quote from: http://www.pocketlogger.com/instruct...cketlogger.pdf

Configuring External Sensor Scaling

Along with the ECU's ability to read an external 0-5V sensor, you can configure PocketLOGGER to
scale the voltage any way you'd like. This allows you to change the value that PocketLOGGER
displays in the View and Datalog screens so that the displayed value is easy to understand.
For example, a common use of the external analog input is to log a wideband A/F meter. Normally the
wideband puts out a voltage between 0 and 5 volts, but displaying a voltage on the PocketLOGGER
screen would not be very useful as you would need to convert the voltage to an A/F ratio in your head.
Using the External Sensor Setup screen, you could instead set up PocketLOGGER to convert the 0-5
volts to display actual A/F ratio which would be much more easily read and understood.
Please note that the scaling routines built into PocketLOGGER can only be
used with sensors that have linear transfer functions.
The math function that is applied to the input voltage can be expressed as:
(Input Voltage * Multiplier) + Offset = Displayed Value
Accessing the External Sensor Scaling Screen
From the Main Screen, tap the menu silkscreen button, tap the “Preferences” menu item, then “Ext
Sensor Setup button. You will see the screen shown below. At the top of the screen, use the
pushbuttons to select the input you wish to set up. ATP will display the scaling used when logging
the Atmospheric Pressure Sensor as an analog input and Var Res will display the scaling used
when logging the Variable Resistor input as an analog input. On S5 cars, the “ATP” label on the
pushbutton will be replaced with “Pin 3F”.
When you tap OK, the multiplier and offset values are stored in the program preferences and will
reloaded every time you run the program, until you change them. The values in the calculator area
are not stored
Cancel will restore the multiplier and offset values to what they were when you entered the screen.
Please note that not all ECUs support external inputs and the ability to set up scaling within the
PocketLOGGER software has no bearing on whether your particular ECU type/version supports
using the ATP or VarRes as External Sensor inputs. The information entered on this screen is
saved on the Palm and not in the ECU.
Configuring Sensor Scaling
There are three ways to set up the external sensor scaling: Selecting a preset from the list, entering
the multiplier and offset directly, or using the built in calculator to calculate the multiplier and offset.
Presets
Tap the Presets pulldown to select from a list of common
sensors. These are built right into PocketLOGGER so there is
no need to search for or calculate the multiplier and offset
yourself. If you are using one of the listed sensors, simply tap
it to select it. The proper multiplier and offset values are
updated accordingly. You are done setting up the sensor, tap
OK.
Multiplier
This is the multiplier value used in the expression above. To
change it, tap the number to display the cursor. Then input
the new number.
Offset
This is the offset value used in the expression above. To
change it, tap the number to display the cursor. Then input
the new number.
+/-
Tap the +/- icon to toggle the sign of the value next to it.
Calculator
The calculator is supplied for those users that may not have the transfer function of their sensor's
output, but have a voltage vs. value chart or list of voltages and the associated values for those
voltages.
To use the calculator, enter two points from the list or chart. These two points should be far
apart from each other. Typically the two points will be 0 volts and 5 volts. You would enter 0 in the
Ref1 volts field, and enter 5 on the Ref2 volts field. Then you would enter the associated values for
0 and 5v in the Value column. Once you are done entering the values, click Calc. The transfer
function is calculated and the multiplier and offset values are inserted into the appropriate fields.
Tap OK.
Tweaking the Display Values
Due to variations in hardware, wiring, supply voltage, and grounds, you may find that the displayed
value for the external sensor does not match the actual sensor reading. This can be evident if you
have, for example, a wideband A/F Meter with a built in display. The built in display and the
PocketLOGGER display may not match exactly.
In order to get the two displayed values closer together, you can adjust the offset value slightly by
the amount of the discrepancy, in the opposite direction.
For example, if you see the built in display is showing 13.00 and the PocketLOGGER is displaying
13.02, the PocketLOGGER is 0.02 too high. To fix this, take 0.02 away from the offset value
displayed on the External Sensor Setup screen. If the offset value was 10, change it to 9.98. This
would put the two displayed values closer together.
Due to refresh rates and hardware limitations, the two displays will typically never read exactly the
same all of the time, but they will be very close most of the time.

 

I found the information i need on the NGK website for my NTK wideband.

For example Mathematically: AFR = (1.4 x Output Voltage) + 9

which means to use 1.4 as the multiplier with a correction of +9. Yours will probably be different, but it's likely innovate will tell you this information either in a manual or online.

 

0V = 7.35 AFR, 5V = 22.39 AFR for an LC-1. It should be in your instruction manual too. http://www.innovatemotorsports.com/s.../DB_manual.pdf

 

Thank you nick and Rotaryrocket88. i when i get a chance, probably this weekend i will try again. those values seem way more correct, and my wideband was on the car when i bought it i didn't receive a manual.

 

put in the said values in the calc and got the values. afr gauge is showing 12 idle and palm is showing 10. i think i the PO hooked the analog 2 wire hooked up to the gauge and i hooked analog 1 up to the ecu. and i know analog 2 is setup for 0V = 7.35 AFR, 5V = 22.39 but i dont know if analog 1 is. and i dont have any if the cables ect to hook it up to my computer to check values.

 

***used with sensors that have linear transfer functions**

If the wideband your using does not output LINEAR then the thing won't work right. I don't own a Innovative so I don't know if it does or does not output in a Linear fashion.

I used a early Zeitronix and it did not output Linear so my figures were all wrong. Got it retrofitted to their newer config and alls peachy keen fine since then.