Better safe then sorry ..Nitrous isn't nothing you should F*ck around with Slap on and Just Call it a day inless you want something to go wrong..

I would atleast upgrade some Ignition/fuel stuff and tune it ..

I like to be on the safe side,on the other hand if you didn't do those step's in the long run something is going to happen ..

You can't just slap on a 100shot on and expect nothing will happen over time.. on a stock motor without tearing into the motor..