hi i have a question in reguards to the 450cc dsm injectors. i was wondering do i have to use resistors if im having the ecu tuned.

If your car doesn't have a stock resistor pack, you have to have the resistor or the injectors won't work. They work on a 12 ohm resistance and your stock injectors might be at a 2ohm depending on the year of your car. I'm not really familiar with Hondas, but i think OBD1 is all P&H injectors.......

If its boosted now, what are you using for tuning and what size injectors do you have??

you can run it without the resistor box, but, you will regret it when the injector drivers in the ecu fries.

so basically if you don't want to f**k things up, you need a resistor......