Dynotune guage

I have a dynotune air-fuel wideband gauge and the LC1 controller + sensor... My gauge displays the lambda value instead of the afr, so it's difficult to know what i'm running. I know 14.7 is na, and for turbo/sc you wanna run around 11.8-12's. So I'm trying to meter it... and from what I can tell it behaves like this...

Idle = -35
10% Throttle = -20
50% Throttle = -30
WOT= -40

and this gauge was not hooked up during tuning. but the sensor was hooked up into HPT and HPT said that I was running 11.9 at about 75% throttle...

Assuming 1.0 lambda = 14.7 AFR....what would these negative values represent in AFR... OR... is there a way to configure it to read AFR instead of Lambda.

any input is appreciated.

I have no idea bro... I think i am going to buy a wide band this summer just for shits n giggles to see what my car is running like stock, then also use it for when she gets boosted. Autometer finally came out with them and in my Ultra-lite series that my car is outfitted in. But if i find anything in regards, i'll let u know.

14.7 is not NA, that is stoich...search it if you dont know what it means

Also, you want to be in the 11.8-12.5 range generally...fail to the side of being rich because lean AF's kill engines....

yeah I think I'm 10.9 at idle and like 11.9 at wot...