If JDM DSM injectors are anything like USDM ones, they should fit, and they're probably peak-and-hold. If you're running peak-and-hold injectors now, they should plug right in. However, if your friend had them in a turbo Eclipse, then the flow rating on those injectors is probably pretty high, I'm guessing over 450cc if he upgraded from stock turbo Eclipse injectors. Find out the flow rating on them, cos if they're over 310cc, you can't run them on your stock ECM. If they're between 310 and 450cc, you can run them with an AFC. If they're higher than 450cc, you'll need a standalone to run and idle them properly.