2004 Daytona 600, possible fuel issue?

Hi all,

I recently purchased a 2004 Daytona. Super happy with it, I've always wanted one.

I got it cheap thanks to a suspected fuel issue the bike was having. Basically at low rpm (under 6k), it would sputter and struggle to gain speed. Once it got above 6, it would go like a rocket.
The engine light was also on.

Over the last few days I ran injector cleaner through it and changed the spark plugs. 3&4 had some crap on them, but not a huge worry. I also re-flashed the power commander.

When I started it up, it was idling great and the engine light was off... until it hit 60degrees. Instant change in idle to a much rougher note and struggling, and the engine light came back on.
At this point, I'm thinking possibly an 02 sensor, but I'm not sure at what point they go into a closed loop.

Today I'll be changing the fuel filter and filling the tank with fresh premium fuel. Is there anything else I need to consider? I inspected the fuel lines and the o-rings, and they looked in great condition.


Thanks everyone

 

Thanks mate. I'll look into the fuel map tonight. How do I check the air/fuel ratio?