An aftermarket full system exhaust gives more power than a slip-on, right? Is it substantially more power-- enough to justify the increase in price?
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.