Las Vegas knew absolutely nothing about tuning a car. The ZEM was the first EFI interface he has seen. He read the manual and once he had it in his car, I provided a good bit of tuning information over the phone and through email to him that is not covered in the manual. He also has a wideband O2 setup in his car linked to the ZEM. Actually having it in the car and spending time playing around with things he has come very far in the two weeks he has had it. The fuel delivery and timing that the VE engine wants is different from the Z and tuning an engine isn't as hard as many people here make it out to be. There are some general trends in how the values flow in a map and the basics of tuning an engine will get you where you need to be. But actually spending the time in the car with the device and playing around with it (with a wideband, of course) will get you into the swing of things quite quickly. Being able to see how the ECU uses the maps in real-time as the engine is running is the biggest element of learning how to use it. It comes quite quickly - much faster than many would think.
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