It's in Lambda. Its an AEM UEGO with Bosch sensor included.Had to jump on it quick because the price was 75% cheaper than it would have been at any retailer here.

My question is: Can I change the face from lambda to AFR? AEM's website says that a switch on the back of the gauge changes readings to either Lambda or AFR. I believe this only pertains to the 30-4100 6 in 1 model as my model number is 30-4112 . I believe this to be in Lambda only. Also, if I can switch the face, can I purchase alternate faces and bezels through AEM or another retailer?

I know nobody uses Lambda for tuning. Converting Lambda to AFR is easy anyway. Just wanted to know if I had any options out there. If I'm stuck with a Lambda gauge, at least I got a killer price.

thanks in advance.

 

It should be just a faceplate that you easily switch out. I'm sure a ton of us have an extra faceplate laying around.