It's not as simple as just hooking it up. You need to learn about how fuel injection works (on a computer/mechanical level)
But to answer your question the most popular would be www.tweecer.com or an Anderson PMS with Interaq software. (PMS is standalone though, so you don't need a laptop.
what blackfox said.........do some reading on ecu systems, there are many out there to choose from, but each takes time to learn and perfect........one of the best is afm's pms...........hotwheels of turborides