Well, I do apologize if I offended you. I put the :thumbup: winky-thumbs up smilie in there to get try to get my slightly exaggerated response to your somewhat trolling statement across....
Yes, I think that my FZ6 runs quite fine with stock ECM and aftermarket exhaust. Actually, I'm sure that it does, and there's nothing that you can do to prove to me otherwise.
Seriously, the minimal amount of change by adding a freer-flowing exhaust is not going to knock the factory tune off kilter. I have a heavily modified car (heads/cam/headers/etc.) with a retuned PCM, but before I heavily modified the car, it had a stock tune and a cat-back exhaust. Guess what, it too ran fine like that.
I do agree that I could probably extract more power from my FZ6 if I had it tuned, but quite frankly, I'm not going to spend hundreds of dollars on a power commander and a dyno tune, in order to pick up five additional horsepower and also have my fuel mileage go into the crapper.
I'm quite happy with my smooth running, powerful feeling, 45MPG getting, 2004 FZ6 with Laser Quad exhaust. :rockon: