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Electronic controllers add greater flexibility in management of boost pressures, compared with the manual controllers. [2] The actuation of an electronic boost controller can be managed by one of two control systems: Open-loop is the simpler option, where control output is merely based on other inputs such as throttle angle and/or engine speed ...
The code has (multiple) 12x12 fuel and spark tables, stepper IAC control, PWM idle valve control, several user-configurable spare ports (for things like boost control, water injection, fan control, etc.), self-tuning functions (Automatic Mixture Control - AMC), and fuel control to 1 μs (100 times more resolution than MegaSquirt-I).
Engine tuning is the adjustment or modification of the internal combustion engine or Engine Control Unit (ECU) to yield optimal performance and increase the engine's power output, economy, or durability. These goals may be mutually exclusive; an engine may be de-tuned with respect to output power in exchange for better economy or longer engine ...
This allows a boost control strategy that reduces exhaust backpressure caused by the turbocharger by opening the wastegate when turbo boost is not needed, resulting in improved fuel economy. The wastegate is also held open during cold starting to lower emissions by speeding up initial catalyst light-off.
Cars with a turbo fitted can have the requested and allowable boost levels raised, these applications usually have the most effect if the turbo fitted is a low pressure turbo which leaves the most room for improvement. Another reason to change the electronic control unit map is if there are engine, intake, or exhaust modifications to the car.
Based entirely on road-car production engines and prepared and built by Mountune Racing, it only differs by utilising a Pi Research Pectel electronic fuel injection and a water-cooled Garrett T34 turbocharger with closed-loop boost control.
That's because the Hurricanes (10-2) fell six spots despite losing on the road to a team with nine wins and top-25 CFP standing, and now trails No. 11 Alabama (No. 11 CFP).
If it is, then the control unit activates a solenoid valve that directs boost pressure to the turbocharger's pneumatically controlled wastegate, that opens to bypass exhaust gases from the turbocharger directly to the exhaust pipe, lowering turbo boost pressure until the knock subsides. Knock events that are managed by the APC can be discerned ...