If its a D17 dont use DSM injectors. Dont use low resistanc peak and hold injectors without a standalone and I would strondly push an injector driver as well. Even with the resistor box its not the way to go. I ran DSM 450s on my AEM ems and they idled awefull no matter what anyone did to the maps. If you look around more there are other injector options on the table.