Can you talk to your ECU?

[Hooffenstein HD]

1010011010

[TobyB]

So it has TXD and RXD pins...

but what does it say?

What does it want to hear?

I have this little hope that it says 'Hey, dummy, your AFM is out of spec'
but there's this great big suspicion that all it says is ACK ACK NACK.

t