Wideband Offset Formula in the Scanner for E10

[JakeFusion]

So, I am setting up my Ballenger AFR500 (old NGK Powerdex) for use with HPT. I know I can use the NGK PID, but I am wanting to make sure the offset is correct for use with E10 fuel so that if I setup AFR or Lamda error, it's actually correct.

The stock formula is V/.714 + 9. Should that 9 be 8.4 because of the E10 Stoichiometric value being .6 lower than E0 fuel?

[DSteck]

Divisor = 0.7388
Adder = 8.742

[JakeFusion]

Thanks, Steck.

So I understand why, it's because the range for AFR 0-5V is 8.74 to 15.5 (solving for either EQ or Lamdba)?