Performance
Engine performance upgrades: airflow, fuelling, forced induction and charge cooling.
Recently updated
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Data logging for engine preparation and design
How serial ECU logs, oscilloscope captures, Crypton engine analysers and crank-angle data acquisition, including the Plex PCA-2000plus, are used when preparing and designing an engine.
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ECU remapping
What an ECU remap changes in the fuel, air, ignition and protection calibration, and what it cannot change on its own.
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Engine performance upgrades
The main engine performance upgrades, from airflow and fuelling to forced induction and charge cooling, and how those changes affect one another.
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Ignition timing for performance
Why spark advance is limited by knock as well as by the timing that would make the most torque.
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Engine displacement
How bore and stroke set the air volume per cycle, and what else changes when displacement is increased.
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Throttle bodies and airflow
How throttle size, intake ducting and individual throttle bodies change pressure loss, air speed and throttle response.
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Compression ratio
How geometric compression ratio is set, and why raising it helps efficiency until knock or cylinder pressure says otherwise.
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Fuel system upgrades
How injector flow, pump capacity and fuel composition have to follow an increase in trapped air mass.
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Camshafts and valve timing
How duration, lift and overlap move the torque range, and what variable valve timing changes with engine speed.
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Cylinder head, ports and valves
How the inlet and exhaust ports, the valve size and the seat control the air the manifold can actually deliver.
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Exhaust system tuning
How exhaust pulses, primary pipes, collectors and turbine housings change scavenging, backpressure and turbo response.
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Inlet manifolds and runner length
How plenum volume, runner length and runner area change the engine speed at which the inlet fills the cylinder.
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Carburettor tuning
How variable-choke and fixed-choke carburettors meter fuel, and what has to be reset when the engine's airflow changes.
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Charge cooling, intercoolers and water injection
How compression heats the inlet charge, what that does to density and knock, and how intercoolers and water injection change it.
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Forced induction
Supercharger and turbocharger types, parallel and sequential twins, twin-scroll and variable-geometry turbines, compound charging and twincharging.