The adapter arrived just in time for our trip to Big Bear Lake. It only took a minute to pair the EM327 to my phone and there were no instructions and the code is 1234. I selected the device in my vehicle profile for Torque, and instantly had read outs from the ECU. I added the MPG, MPG Avg, Speedometer, coolant temp, and GPS Altitude to my custom screen. The program stayed on the whole time and had no hiccups. It all kept in very close step with what was going on - for very little if any delay. Well worth a $20 investment. And as mozzman would say "kewl". No if I could tell the motor to stop drinking gas like Koolaid... oooohhhhh yeeaahhhh!!!!