Hello,

i have a problem with PID 23. I want to display my fuel rail pressure in bar, but the preset PID in the app only allows me to display it in kPa.

I tried to get around this by creating a custom PID 23, but the data it returns is nonsense (jumps around between 12,000,000 – 37,000,000kPa at idle when it should be stable at around 25,000kPa). The equation i used is ((A*256)*B)10.

I was hoping to simply convert the kPa output to bar by setting a x0,01 multiplier, but this obviously doesnt work if the kPa output is wrong.

Did i miss something? Is there any way to find out what equation is used in the preset fuel pressure PID (which is reading correct values)?

My car is a 2010 Audi A5 3.0TDI

Thanks for any help!