Hello, I was hoping to get some advice. I am wondering if the 05's have a common problem with a fuel pump going out/fuel filter getting clogged/something else like that that would cause this problem.
The bike is an 05 busa with 13k on the clock. No engine related mods except for slip-ons and a TRE. I slapped the bike on the dyno to see how the power output is, and I discovered that its going lean up top. I loaded up another similar plot (green plot) from a different bike from a while back for comparison. You can see the air/fuel radio as the dashed line, and it corresponds to the right-hand axis.
Has anyone else seen this problem? Any ideas as to why a stock bike would be leaning out up top? My first thoughts are to replace the fuel filter and pump, but I hear an OEM suzuki pump is very expensive. I could throw a walbro in there, we have a bunch new ones. How difficult is it to get a walbro wired in and installed into a stock busa?
The bike is an 05 busa with 13k on the clock. No engine related mods except for slip-ons and a TRE. I slapped the bike on the dyno to see how the power output is, and I discovered that its going lean up top. I loaded up another similar plot (green plot) from a different bike from a while back for comparison. You can see the air/fuel radio as the dashed line, and it corresponds to the right-hand axis.
Has anyone else seen this problem? Any ideas as to why a stock bike would be leaning out up top? My first thoughts are to replace the fuel filter and pump, but I hear an OEM suzuki pump is very expensive. I could throw a walbro in there, we have a bunch new ones. How difficult is it to get a walbro wired in and installed into a stock busa?
