ECU from Guhls/Dyno ready

[Dover_MA_imp]

Some of the info on Guhl's web site looks outdated. For instance, under the heading Fuel Injection 101 it says:


Fuel pressure is one of the most crucial settings when working with a fuel injection system. Improper fuel pressure is a leading cause of poor performance in a fuel-injected engine. The fuel pressure setting directly affects the air/fuel mixture. Automotive systems are “closed loop” while current motorcycle systems are “open loop”. In a “closed loop” system, oxygen sensors provide feedback about the air/fuel mixture and the system adjusts automatically. In an “open loop” system there is no feedback to the computer. This means that if the fuel pressure is not properly set, the computer has no way of knowing the pressure and the air/fuel mixture will be affected accordingly.



That's not true for our machines, right? The cb1100ex has an O2 sensor for each pair of cylinders, and I thought ran closed loop at all the normal closed-loop times (warmed up, not wide open throttle, etc). Even my 2019 Monkey has an O2 sensor (in the exhaust port of the head).

I didn't know there were ever any fuel injected systems that didn't have the ability to sense oxygen and run closed loop. Does anyone know of examples of this?