How do you not know what your selling? Where did these come from?
heres their # 440-666-5755 . i have no skin in this but from a sideline point of view, the beat down is uncalled for. its up to you guys to ask these questions up front if its old stock, firmware, etc,,, and honestly, you can monitor your afr from your factory sensors on these gauges with the current firmaware, you just have to run under analog 1 or 2 , and tap in to your signal wires on your sensors and set the values. just like setting up a map sensor for boost. if you dont wanna spend 40 bucks !
All you have to do is look at the back. There's a sticker that shows the firmware version. If its 3.8 or higher your fine.
I contacted Aeroforce yesterday, the ones I bought read V3.7 (CN202F V3.7) on the back, and Aeroforce told me that 3.7 is the latest version.
Ntx- I'll refund you the price of the cable, as it was one I had laying around from my old mustang, didn't know it was bad, but I'll eat that cost