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Wideband threw egr help

There should be no guessing involves if you use your scanner in conjunction with a volt meter on the wideband to see actual voltage find the difference if you need the excel spreadsheet to figure it out from there let me know
 


91parkave said:
There should be no guessing involves if you use your scanner in conjunction with a volt meter on the wideband to see actual voltage find the difference if you need the excel spreadsheet to figure it out from there let me know
Click to expand...

Am i checking for voltage directly from the wideband or am i checking the voltage from the wre going into my egr plug?
 
For example with the lc1 wideband we can set a voltagae for the wideband then open up the scanner and see the difference.

I'm not sure on uegos if you can command a voltage, however same rule applies check your voltage at the egr plug. Check the scanner
 
91parkave said:
For example with the lc1 wideband we can set a voltagae for the wideband then open up the scanner and see the difference.

I'm not sure on uegos if you can command a voltage, however same rule applies check your voltage at the egr plug. Check the scanner
Click to expand...

Ok so i Checked my voltage. When i first turn on the car the voltage kind of jumps all over the place anywhere from 1-3 volts. After like 15 seconds it sits steady at around 3.10-3.14. Is that the heater warming up in the o2 sensor? And am i comparing this to the egr voltage im reading in hpt?
 
First question is the volt meter accurate?

First point I'd like to make is: The AEM outputs 0.5 to 4.5V. Not 0-5V. So that will throw off the scaling.

My experience was simply keep adjusting it until the displayed value matches the value on the gauge. In short, voltage based measurements suck, especially when you are unable to calibrate the output.
 
matt5112 said:
First question is the volt meter accurate?

First point I'd like to make is: The AEM outputs 0.5 to 4.5V. Not 0-5V. So that will throw off the scaling.

My experience was simply keep adjusting it until the displayed value matches the value on the gauge. In short, voltage based measurements suck, especially when you are unable to calibrate the output.
Click to expand...

Volt meter seems correct. Tested it with a battery tester and both were about 12.5-12.6 with the same battery. I tried messing with the values and they are good sitting there but when i got for wot scans my wideband is sitting tacked at 10.00 and im reading anywhere from 10.5-11.5 on the scanner.
 


Alright well i locked the scanner and what im reading on the gauge perfect and still at wot its way off. What would cause this?
 
what range did the spreadsheet give you? and you are using AFR high res instead of low res for your formula right?
 


My user defined is setup exactly like this

Name-wideband
Abbrv-wb
Sensor-Air fuel ratio
Units- :1

Function:
([PID.2811]/0.5)+9.777

At 9.777 the gauge reads perfect to my user defined parameter but at wot its off.
 
Step 1: Enter the voltage range of your AFR device. This is normally 0 to 5 volts. Step 2: Enter the minimum and maximum Air/Fuel your device will read. (Your Wideband manual will list this) Step 3: Enter the data the formula gives you (see the green box above) into your HP Tuners software. (See Tuning school Manual for details) Step 4: If your AFR is reading different in HP Tuners than the Wideband readout shows, use the offset adjustment. For example, if your HPT read low by half a point (.5) then you would enter -.5 than into the offset cell. Then enter the new forumla corrections into the HP Tuners and compare. If your wideband does not have a handheld with digital display, use the software they sent to compare. SEE Tab below “Common WB Data” FOR VALUES OF COMMON WIDEBAND SENSORS
 


91parkave said:
Step 1: Enter the voltage range of your AFR device. This is normally 0 to 5 volts. Step 2: Enter the minimum and maximum Air/Fuel your device will read. (Your Wideband manual will list this) Step 3: Enter the data the formula gives you (see the green box above) into your HP Tuners software. (See Tuning school Manual for details) Step 4: If your AFR is reading different in HP Tuners than the Wideband readout shows, use the offset adjustment. For example, if your HPT read low by half a point (.5) then you would enter -.5 than into the offset cell. Then enter the new forumla corrections into the HP Tuners and compare. If your wideband does not have a handheld with digital display, use the software they sent to compare. SEE Tab below “Common WB Data” FOR VALUES OF COMMON WIDEBAND SENSORS
Click to expand...

I seen... Enter where?

Edit: nevermind i had to download the spreadsheet to enter the data into it. I get it now.
 
matt5112 said:
First question is the volt meter accurate?

First point I'd like to make is: The AEM outputs 0.5 to 4.5V. Not 0-5V. So that will throw off the scaling.

My experience was simply keep adjusting it until the displayed value matches the value on the gauge. In short, voltage based measurements suck, especially when you are unable to calibrate the output.
Click to expand...

are you sure of this .5-4.5 ? http://www.schnitzracing.com/manuals/AEMWBK.pdf says 0-5
Gauge
Supply Current (nominal): 1.3 amps
0-5V Analog Outputs: 1
Measuring Range: Sweeping LED 0.751 to 1.143 Lambda
Measuring Range: Numerical Display 10.0:1 to 18.5:1 AFR Gasoline
Harness & Connector Temp Limit: 105C
Sensor
Type: Bosch UEGO LSU4.2
Accuracy: +/- 0.7%
Exhaust Temp Limit: 1030C
Cable & Protector Sleeve Temp Limit:250C
Connector Temp Limit: 120C
Initial Warm-up Time: Less than 20 seconds
Weight: 80 grams
Heater Current: 1.2A at 12.0V (each sensor)
Mounting: M18 X 1.5 thread, Torque to 30 ft-lbs
80,000 km for Unleaded Fuel
50,000 km for Leaded Fuel 0.15g Pb/l
20,000 km for Leaded Fuel 0.40g Pb/l
Nominal Service Life:
10,000 km for Leaded Fuel 0.60g Pb/l


So pretty much enter 0-5 in step 1. 10-18.5 in step 2.
formula gives me .588235294

So under function enter
([PID.2811]/0.588235294)+10

Then scale 10 to match if its off?
 
91parkave said:
he 10 now becomes a voltage offset so if you're only seeing 9.7 instead of 10 you put 9.7 there
Click to expand...

Ive been reading alot of things how the aem has alot of the same issues im having and to calibrate it correctly with the scanner is a total *****. Read one thing on how someone tested there min value reading like .35 Ima go play around with some setting and wot runs and see if i can get them closer
 
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