Give me $350 (ono) and I will throw in a meek 055, 510 chip as well as the bay, caps and jumper. 055 afm is a magna oval one, same flow as a 609 but easier to find. With 3 month warranty.
But I still reckon get the chip for a 482 round late magna maf, or a 399 if you can stretch the coin for a evo afm. But they flow the same. And no worries about elbow (magna elbow is wrong angle)
I would say with evo7 injectors, afm and ecu, you can drive away on the std tune. A innovate mtx-l will tell you if its ok, and if its safe at boost on the oem tune.
The evo 8 ecu is more advanced, but probably not noticably.