0-5v O2 Sensor Input

JapanPAssion ¬¬

#46 ◈ 2025-05-21

Re: 0-5v O2 Sensor Input

mmmm...

hi guys..

I read the post and bump for this good idea.. but..

I have crome Pro and PLX AFR-WD 5volt blocked

We have another way to read the 20AFR without ecu modding?

If not..

how can i read it onto the ELD pinout on crome tuner?

sorry if the matter is spoked but i don't find the post...

turbo_eg

#47 ◈ 2025-05-21

Re: 0-5v O2 Sensor Input

can you install the stock o2 sensor back on the car if you do this mod

Smooth1

#48 ◈ 2025-05-21

Re: 0-5v O2 Sensor Input

Of course.

B20vDB8

#49 ◈ 2025-05-21

Re: 0-5v O2 Sensor Input

i know this post is old but im trying to this mod to my ecu , is it saying we r adding a 10uf cap to make it work or just add a jumper from the cap to r5 ???????? :roll:

ben_deez

#50 ◈ 2025-05-21

Re: 0-5v O2 Sensor Input

Image

Image

Image

Orange_SIR

#51 ◈ 2025-05-21

Re: 0-5v O2 Sensor Input

would this mod be very beneficial or i can go without it?

RicardoNC

#52 ◈ 2025-05-21

Re: 0-5v O2 Sensor Input

Orange_SIR wrote:
would this mod be very beneficial or i can go without it?


If you limit the wideband output AFR readings to 0.06~3.8 volts, you dont need the mod.
The mod implies open-loop tunning/operation.

ben_deez

#53 ◈ 2025-05-21

Re: 0-5v O2 Sensor Input

RicardoNC wrote:
Orange_SIR wrote:
would this mod be very beneficial or i can go without it?


If you limit the wideband output AFR readings to 0.06~3.8 volts, you dont need the mod.
The mod implies open-loop tunning/operation.



you get a way more accurate reading with 5 volts... for me, tuning is all about accuracy plus the lc-1 was made for 5v opperation..., any thing else is questionable as far as accuracy

scanikwwo

#54 ◈ 2025-05-21

Re: 0-5v O2 Sensor Input

For all the people who still ask how to do it:

Here's a little pic found in topic about 5v mod (made by acidz_z6) and edited it to be correct. The red line is the jumper mentioned above (it is suppose to be on the bottom side of PCB).

Attachment:
5v mod pgmfi.JPG
5v mod pgmfi.JPG [ 10.81 KiB | Viewed 27523 times ]