Was he running them in a turbo Eclipse? If so, why would he step down to smaller injectors? Turbo Eclipse injectors are 450cc. Did he swap in Hyundai injectors for fun, or was there another reason? Ask him what size they are. If all else fails, you can get them cleaned, which includes a flow-test that will tell you exactly how much aeach injector flows. It's probably a good idea to get used injectors cleaned anway.

http://www.cruzinperformance.com/fuelinj.html