Wiring in a PLX wideband guage. The readings on the Gauge are different than what's being inputting to the flashpro.

I cut and soldiered the PLX 0-5v output to the ELD wire on the stock ECU.

I set the flashpro to disable the ELD, and set the wideband input to ELD.

At idle the gauge and wideband display on the flaspro are pretty close.

But during 3rd gear pulls the gauge is flat at 10.0 afr from 3500-8000rpm and the flashpro is seeing 11.7-11.8 all the way from 3500-8000.

What am I doing wrong???

P.S. I did not use a new pin for the wideband, I cut and spliced into the factory wire...... Does that make a difference?

 

Looks like hondata says to ground the wideband where the ECU is grounding. This being the cylinder head. I can't really see back there.

Anybody have some pointers for me?

 

i have no idea what i'm talking about but maybe there is a processing delay on the PLX box thing?

 

I have same exact problem as you and I do not have my PLX gauge grounded to the cylinder head ether. Do you see that your AFR is off at idle as well. My PLX gauge will read 14.7 but at the same time flashpro will read 15.0. The richest I have seen in WOT is 11.6 on flashpro even though my wideband will say a lot richer. If you find a ground that works better for you please let me know as getting to the ground behind the cylinder head is almost impossible.