I'll try and build a USB one using one of these:
http://www.sparkfun.com/commerce/pro...oducts_id=9434
it has the same four pins, only thing that is interesting is that it gets forced to 12Mhz as the USB standard
do you happen to know at what rate the bluetooth modules you guys have used run at? obviously the actual wireless is still 2.4 Ghz, and as long as the ECM sends bits at under 12Mhz you would be solid assuming the USB device itself can understand varying speeds from the ECM
hmmm I'll see what I can dig up
if we can pop one together at $15 a piece I'm sure plenty of people would jump for them
thanks a ton for the write-up!