Greg,

While I agree that gauges are open, I don't see where that allows you to run the output to the ECU (if you can't get it there through the stock harness). The way I read the ECU rule, you can't get anything to it that can't come through the stock harness, and doesn't require any additional (or disallowed, ala ABS) sensors.

You already have expanded the performance envelope, only a few people with monetary means can take advantage of it. [/b]
And then there's that whole group of FI cars that can't take advantage of it.