Or RyanRPM... He bought an "Aqua Tune" for his Tundra a few years ago. You may remember that thread, Frank.
I asked him to let us know how it worked out for him, but we haven't heard from him since.
It seems like a number of people come here looking for a "magic bullet" for good fuel economy, but they're not willing to work for it.... :shrug:
On edit, I wish Arragonis had been here to reply to DoctorM's threads.