So would anyone be around to help me figure out a formula for my prosport wideband. It uses the bosch lsu sensor. I just double checked my work with biggiesacks method of checking it reads voltage with logging the request id 3c and using the formula 0.01952*x.

I did see a voltage of 2.6 to 2.7 which had the gauge in the 15 area which is correct. Just need to figure out what i did wrong in the equation.

the wideband reads from 10-20

i used the original formula and replaced the values with mine.

(17.0-9.0)/255*x + 9.0 = 0.03137*x + 9.0 <-------------Mr Freds and what i tried ----------------> (20.0-10.0)/255*x + 9.0 = 0.03137*x + 9.0
(20.0-10.0)/255*x + 10.0 = 0.03137*x + 10.0

Tried both ways seeing i wasnt really sure as to what values were meant to be changed and what stayed. Didnt see any difference in either way though. Just showed a zero or 1 i believe the whole time.

 

Well guess i posted too soon. I went back and used Tephra's formula and inputed my values and it was spot on.

 

Can anyone share what is the best way to connect the analog singal wire from my wideband to the oem evo 9 ecu? I'm targeting the ecu slot 93 for my wideband signal. any help would be very much appreciated.

 

You would connect it to pin 73 on the ecu, but there are changes in the rom you must make. See post #1 of this thread.