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
Hi GG and welcome to the forum. It sounds a bit like someone has been playing around with the ECU / fuel map to me. I had a similar issue with a T595 where the previous owner had tried to install a new fuel map and it went a bit wrong and it corrupted it. If the download is interrupted or you touch the throttle while it is downloading then the ECU reverts to a base map which is rubbish. Air to fuel ratio for these bike should be somewhere between 12 and 14, when I had mine remapped the garage checked what it was doing on a rolling road and at 3500 revs it was showing 18!! The bike then had a new map but in and the garage trimmed it whilst on the rolling road and end result was a completely new and better bike :upyeah: May be worth looking at Cheers Steve
You have to go to a place that tune bikes with a dyno, I used Dynatech in Basingstoke and they did a fantastic job, best suggestion is speak to other bike riders and ask who they would recommend in your area. Cheers Steve
