RC injectors are great, albeit slightly expensive. Just make sure that you get the high impedance ones. The low impedance ones are in abundance everywhere, but eventually, unless you get a resistor pack, that wrong impedance signal will start sending things haywire. Brand new, they can cost a pretty penny; that's why I opted with the RX-7 ones... pretty expensive but still cheaper than RC and they were also cleaned and flow tested from the shop I got them from.

 

Non STI 440's should work fine. This is a new thing for the average eclipse driver planning for boost. I personally am using evo 560's but cant find a stright answer on if or what kind of resistor pack i need. I got one off of eby from a 1g eclipse for 450's but not sure if its sufficient for evo 560's. Do evos have resistor packs as well??