I recommend anyone wanting to go with the 550cc injectors to do so only if you can dyno tune it. Jesse's log looks a lot like mine did, pig rich... I gave up on remote tuning with the 550's. However, here is what I used:

Bosch EV14 550cc injectors: EBay $44/ea
http://www.ebay.com/itm/Authentic-Bosch-EV14-52lb-550cc-injectors-48mm-/330713666015?pt=Motors_Car_Truck_Parts_Accessories&hash=item4d001211df&vxp=mtr#shpCntId
Wiring adapters EV6 to EV1: Amazon $52