Boost pressure limit
Boost pressure limit can be found under Base Engine > Limits and fallbacks.
Coolant Based RPM limit
The CLT based RPM limit is a useful limit to put in place to prevent the car from being over-driven whilst it is cold. It can be found under Base Engine > Limits and fallbacks and can be enabled by turning on the CLT based RPM curve. If using this feature, it is recommended to limit the engine RPM below peak engine torque until the engine has reached ~70-80 °C
FOME Fuel and Ignition Cut Codes ("Clear Reason")
The log channels Fuel Cut Code indicate why fuel or spark is being cut using one of the codes below. These are not necessarily errors, but just indicate why the particular cut was performed.
Fault Codes
FOME reports problems as OBD-II style fault codes (DTCs). Most of them are standard P0xxx/P2xxx codes with their usual meanings, so a code you see here means roughly what it would mean on a factory ECU.
Fuel Pressure Compensation
Injector Duty Cycle Cut
This feature cuts the injectors in the case that a set duty cycle is exceeded temporarily or for a sustained period. Setting this up can prevent injector damage in the case that the fuel map is asking too much from the injectors.Most injectors shouldn't exceed a duty cycle of ~85-90% temporarily or ~75-85% sustained. The sustained duty cycle delay can be set at ~0.5-1 second as a safe starting point.
Lambda Protection
Lambda protection can be used to prevent engine damage by cutting fuel if the lambda sensor value goes out of a predetermined deviation. This can be useful when tuning the car to ensure that engine damage doesn't occur from a range of conditions including lean spots in the fuel map under power.
Oil Pressure Protection
The oil pressure protection will cut fuel to the vehicle in the condition that a minimum oil pressure after start isn't reached or oil pressure drops below a threshold during operation. This is a useful safety feature to prevent engine damage in the event of oil pressure loss.
Rev limiters
Rev limiters can be found under Base Engine > Limits and fallbacks.