Some of the recent Honda 6-cylinder engines can also deactivate down to 4. Most manufacturers are afraid to go below 4, however, because engine dynamics change quite a bit at 2 cylinders.
Back on to PPCs, I would love to be able to have a wireless always-available display possibility in my car, but the autoenginuity people claim that the more intricate sensors (beyond simple OBD-II) require a full-speed USB connection:
http://www.autoenginuity.com/products-hardware.html I wonder if this is snake oil talk from them, or if it's valid.
I also wonder if the bluetooth adapters from others can be left plugged in? Would be fun to just hop in and pull out the PPC, set it on the console and go
