what exactly do i need to make these injectors work?? its for my d16y7?

 

are they dsm 450s? if so, you need to make the o ring that sits in the intake manifold bigger on the inside to accomadate the bigger injectors, i used a dremel. is the d16y7 still in an obd2 civic? if so you need to wire in a resistor box and different injector plugs. if the motor is in a obd0 multi port civic it already has the resistor box and the injectors will fit the stock plugs.