hp18racer

I did not use their tech support.

The manuals on their site for my specific hardware are really quite good.

You have to be a little careful following details in their more generic documentation as some important details change with different revs of hardware.

One thing I wish I had done before messing with any of this is to put a wide band in a well behaved street car that hasn't been modded and pay attention to what it does in various driving conditions!