VersaTuner Demo

[Mazdazilla6]

Got it downloaded. This stuff looks awesome! Definitely going to jump ship when it comes time to put my car back on the road.

@Steve@VersaTune; I'm looking at the demo log. The fueling says Equivalence Ratio but the unit is Lambda? Is it actually showing fuel in equivalence ratio or is it showing in lambda?

[Steve@VersaTune]

Originally Posted by Mazdazilla6 I'm looking at the demo log. The fueling says Equivalence Ratio but the unit is Lambda? Is it actually showing fuel in equivalence ratio or is it showing in lambda?

ER can be represented as phi or lambda. Mazda uses lambda.

phi: >1 = rich, <1 = lean ie. fuel-air ratio

lambda: >1 = lean, <1 = rich ie. air-fuel ratio

Stoich AFR for gasoline is ~ 14.7. Stoich ER (phi or lambda) for any fuel is 1.00000

[Mazdazilla6]

Originally Posted by Steve@VersaTune ER can be represented as phi or lambda. Mazda uses lambda. phi: >1 = rich, <1 = lean ie. fuel-air ratio lambda: >1 = lean, <1 = rich ie. air-fuel ratio Stoich AFR for gasoline is ~ 14.7. Stoich ER (phi or lambda) for any fuel is 1.00000

Ahh, okay. I'm just used to different terminology. I was taught lambda = lambda and ER = 1/lambda. Good to know, thanks!