Yes.
There are plenty of posts on the subject, but I will take a stab at summing it all up.
Internal combustion engines are basically an air pump. By opening up the intake and exhaust side, you are allowing more air in and out. The fuel injection system works in closed loop. It doesn't get feedback from an oxygen sensor to adjust air/fuel ratios. It only injects a certain amount of fuel based on the stock pipes/intake. You will be moving more air with the stock amount of fuel. So, your bike will run leaner creating more heat for the engine and exhaust pipes. To compensate for this, a fuel controller is placed inline with the injectors to give it more fuel. I'm no expert, so take this info with a grain of salt eh?
There are plenty of posts on the subject, but I will take a stab at summing it all up.
Internal combustion engines are basically an air pump. By opening up the intake and exhaust side, you are allowing more air in and out. The fuel injection system works in closed loop. It doesn't get feedback from an oxygen sensor to adjust air/fuel ratios. It only injects a certain amount of fuel based on the stock pipes/intake. You will be moving more air with the stock amount of fuel. So, your bike will run leaner creating more heat for the engine and exhaust pipes. To compensate for this, a fuel controller is placed inline with the injectors to give it more fuel. I'm no expert, so take this info with a grain of salt eh?