Hi Impedance No RESISTOR BOX NEEDED! You are looking at the BEST injector made for your Honda Acura engine. These are all dynamically flow matched on our own flow bench.
The car I just build would not start with Bosch 2200 not the rdx injectors. Bought these and my car fired up the first try! Awesome injectors. Good tech support and came with full dead time sheet for different fuel pressure. I highly recommend these injector.