I believe, since you are using a fuel injection set up, you have to wire things up a bit differently. 12 volts must be provided to the system, at all times (with key on, and in the start position). You didn't mention what you are using for an ignition system, and that may come into play as well, if you are using the ballast resistor. You would have to isolate that system from the rest. 12.2 is, believe it or not, actually low -especially after charging. You should check connections, and possibly parasitic / ignition off draw, too; but let's get the starting issue fixed first.
