what we be a good way to test it like is there a certain gear i should be in or should i just flip the switch and start grabbin gears i no i need to be above 3 grand and r there any things i should be watching for
I would use 3rd gear to make your first test runs. That way, you are less likely to break the tires loose and over-rev the engine. 2nd gear would work if you have drag radials.
Don't forget to turn off your traction control. If it spins and activates the traction control, it will start cutting fuel to the engine. Thats a very bad thing with forced inducion.
If you get a tune, have your tuner turn off the tc in your nitrous tune.