Aufitt-- how do I find HoPmix's Bazazz video?There are lots of threads on the bazazz fuel management, you will need it to take any advantage of the full system.
All depends on your budget, watch HoPmix's Bazazz vid.
You still had to tune for a carb. It was cheaper but WAY harder and not nearly as precise.http://www.cbr250.net/forum/cbr250-performance/2049-akra-z-fi-vs-stock-2.html
But it will cost $300+ for the Z-Fi and another $300+ to dyno and tune.
But the gains are there.
EDIT- I believe he does not have the larger header pipe yet but now he can tune it when he gets it.
Welcome to the drawbacks of fuel injected motorcycles.