plxm300. hondata only showing 12.08

[sohc95]

so ive got my setup...
plxm300 with hondata. and voltage is the 0v 5afr and 5v 20afr.
but for some reason when i go to display or datalog it will not read below like a 11.9 or a 12.08 depending on what my offset is. like a -.25 to -.36 offset.
im not sure why it wont go that low.any hints? the plx is reading a 10.8 under high boost high rpm but hondata keeps just saying 12.08 dead untill i come back up past a 12.08 then it works fine.


help would be graetly appreciated

[FreshDA9]

so ive got my setup...
plxm300 with hondata. and voltage is the 0v 5afr and 5v 20afr.

First problem it should be 0v 10 - 5v 20. there might be a problem to start. what input are you using your wideband on? Have you checked your wiring.

[sohc95]

i lied lol it is the 0-10 and 5-20 lol typo.

im running the eld d10 pin. but thats the only thing i have coming from the analog plug. do i need to run a ground from it?

[OSracer]

From the help file

Note that if the ELD input (D10) is used then R136 and R138 (US ECUs) may need to be removed.

resistors would cut the voltage before they reached the processor causing an improper voltage reading

[sohc95]

oh ok. i understood those resistors to just kinda be a fine tuning for the offset. not like a HUge thing.

[FreshDA9]

PLX told me to use the analog ground this is the issue i found with my PLX. the bottom left pin on the 4 pin connector of the plx is the analog ground you have to pin it with a new wire then splice into the ecu ground D21 or 22 i think mines on D21. see if that helps. I would have J12, R136, R138 cut also if your ecu has them.

[H22A_lude]

I had the same issue; would only read at 12.5ish. Turns out the Voltage range for ELD was set to read at .7-1.4 volts. Changed that and it started reading right.

[diSTiNCt]

^ can anyone confirm the voltage range of the previous posting? .7-1.4, seems like a very small range

[Spunkster]

It should be set to 0 and 5

[V-Spec race development]

PLX told me to use the analog ground this is the issue i found with my PLX. the bottom left pin on the 4 pin connector of the plx is the analog ground you have to pin it with a new wire then splice into the ecu ground D21 or 22 i think mines on D21. see if that helps. I would have J12, R136, R138 cut also if your ecu has them.

Did you have to use the top left 3.3v of the 4 pin connector of the PLX? or you just use the 3 output w/c are the NB, WB and ground? if so, where did you hook that 1 to? (3.3V) top left corner of the 4 pin connector thanks.

[lowblow]

Start the motor for few second and turn it off . Put key at ON position . Start to adjust offset voltage until gauge mach with laptop .

[FreshDA9]

PLX told me to use the analog ground this is the issue i found with my PLX. the bottom left pin on the 4 pin connector of the plx is the analog ground you have to pin it with a new wire then splice into the ecu ground D21 or 22 i think mines on D21. see if that helps. I would have J12, R136, R138 cut also if your ecu has them.

Did you have to use the top left 3.3v of the 4 pin connector of the PLX? or you just use the 3 output w/c are the NB, WB and ground? if so, where did you hook that 1 to? (3.3V) top left corner of the 4 pin connector thanks.

Top left 3.3v is for the gauge display. bottom is analog ground or also used to read lambda on the gauge depending how you hook it up. on the right side you will have your nb and wb.