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tofu
05-11-2006, 04:41 PM
I cant get the two to have the same readings. I already adjusted the LM-1 from 0-5v as 10-20 afr, which should be the default for the datalogit(chich i checked also), and the readings are way off. The wideband reads around 14 for idle, while the datalogit reads about 12.5ish...any ideas? thanks!

nyoneway
05-11-2006, 05:06 PM
Did you calibrate the O2 sensor in free-air before the install? Did you ground it right? Most issues are caused by bad grounding as the DAC chip are not able to output voltage at a consistent level.

tofu
05-13-2006, 07:29 AM
I think the wideband is reading correctly, its just when i try to read the afr through the datalogit, the values are consistenly off.

Jesse IL
05-13-2006, 08:01 AM
No idea unfortunately. With other widebands, the Datalogit always reads about half a point leaner due to the floating ground.

nyoneway
05-13-2006, 05:44 PM
I think the wideband is reading correctly, its just when i try to read the afr through the datalogit, the values are consistenly off.

There's 2 DAC chips on the LM1 and its not rare to have one of them malfunction. Try switching the output.