TBI, TPI, Vortec, etc what\'s the diff? What's the difference in the systems? Which ones make the most sence for off roading and why in your opinion? How difficult is each to tune, to keep dry, and to destroy. What's everyone's take on the different injection systems? A lot of guys up here run projection but they have to tinker with that stuff all the time. I like the set it once in winter, once in summer kinda method. No problems there. Here's a pic of BlazzinOR's TPI setup: Anyone have any other pics?