They are from Siemens. They are 55lb (they may flow a little more depending on testing methods) and require no modifications to your ecm. I have these running in my car right now, and they run beautifully. I have been told they are capable of handling a lot of fuel pressure. So it is theoretically possible to run more pressure and turn it into a 60lb/hr injector as long as the chip is tuned for it, and you have enough fuel pump. (I'm not necessarily recommending that.) I believe these will be more widely available very soon.
I don't burn my own chips, I like Jay Carter chips, does he have anything available for them yet? Right now they look like they will be the hot ticket for engines producing 550 - 625 hp while still leaving a safety margin.
I agree with you RED, but i dont have main capps, or anything else to help support the bottom end. I just figured these 55's-60's would get me into the high 10's without pushing the stock bottom end. I guess i just need to decide whether or not high 10's is as fast as i will ever want to go. Or will I keep getting greedy for more power!