Things can go toooooooooo lean.
Correct once one item is changed it changes other things, so just like on a carburated system things need to be fattened or richened up. Or on carbed sytems you can say the carbs need or needed to be rejetted. Reason they sell some many fuel tuners, helps reset the amount of fuel the engine gets.
Buckeye, Arizona(USA) 2011 Victory Cross Roads, Black police bag guards, black engine guards, black handle bars, Triumph Tiger mirrors, Triumph hand grips, set speedo/tach back 5" , adjustable timing wheel, Lloyzz Fuel Programmer III & air filter. Modified exhaust, made stock into 2 into 1. MRA windshield, Rotated front fender forward,relocated ignition switch, Bad Ace Fuel Tank Risers, Fat front tire.