I'm using an AEM 30-0300 wideband I've noticed that my wideband reads a little different (.5 to 1 point) than what HPtuners sees when using the proper transform ratio (V/.42105263)+7.3125. For instance my wideband gauge will say I'm at 14.2 and HPtuners says I'm at 15.1. I'm using the same formula that the manual states and what HPtuners has by default. I'm using AFR not lambda.
I've changed the formula a little to more closely match what my wideband is actually showing me.(V/.45105263)+7.3125 (With in.2-.4 points now)
Is this typical to have to manually adjust the formula for each wideband or do I just have a wonky one?
I've done the resistor cal and free air cal with the same results.
Thanks guys.