Another way to correct wideband offset.
This is for the LM1 and LC1. Its so you dont have to use a custom PID and are able to use the stock HPT EIO input. It makes things much happier. It worked perfect for my LC1 and Im going to do it to my LM1 tomorrow. I pulled it from another thread from a while ago that I remembered.
REMEMBER THAT THE ADJUSTMENTS ARE MADE IN LOGWORKS. NOT HPTUNERS.
and this is using the lm-1 presets in hptuners.
Start up HP Tuners and You want to look at table 4.
This will give you an average of the WB. Then with the ignition on, WB all hooked up and HP Tuners hooked up but not logging
open logworks:
1) Go to the advanced tab
2) Then uncheck the high imp box for heater warmup
3) Put in 2.30 into there for the voltage for heater warmup
4) hit ok
5) then program
6) Close logworks
7) Turn off LM-1
8) Turn on LM-1
9) Start to scan right away
10) Before the o2 sensor heats up all the way note what the average AFR is, we want this number to be 14.7.
11) If it is higher than 14.7 raise your voltage and repeat steps 1-10 until you reach 14.7:1 AFR average, or close to it (14.67-14.73 is acceptable). If it is higher than 14.7:1 you want to lower your voltage...ect. (I think this is right, could be wrong with which way to go but I think you get what is going on by now, maybe haha). If the voltage is in range go to step 12.
12) Enter a low voltage, around 0.000-0.250 into the heater warmup voltage and program it according to the previous steps in 1-10. See what the average voltage is.
13) Once you know the average voltage via the scanner, once again make SURE you only look at the value when the sensor is warming up, take note of this average value. Open the logworks and go to the proper analog tab that you have been adjusting for. There will be a button to hit towards the bottom to change from lambda to AFR, click the AFR circle. In the first line put the voltage and AFR reading in their proper spots, then program.
14) Go to the advance tab and put something in from 4.500-5.000 volts for the heater warmup. We will repeat the steps like the one you just did to determine the average AFR for this. Once you find it, enter the voltage and AFR in the analog tab in the second row after clicking the AFR circle once again to the right of these boxes.
15) Now look at the bottom, you see 14.7, follow that line up to the cross in the graph and see which voltage that refers to. If it is the voltage you used earlier to get 14.7:1 AFR in the scanner, you are done. If not try to adjust the voltages for the anologs some more, redo the AFR stuff and re-enter it until you get the proper voltage for 14.7 in the chart under the analog tab.
it seems harder than it really is, once u see things adjusting "during the sensor heater warmup cycle" its easy cheesy.
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Originally Posted by Country Boy
