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Blow off valves and dump valves.
When the throttle is closed (when you lift off the accelerator) in a turbo driven engine there is a build up of pressure as forced air is still coming from the turbo. Lifting off the throttle is a lot like putting a plug in the sink – the flow through is stopped and water would just build up and overflow the sink.
Performance gains are possible with the addition of bonnet vents.
Warm air really does kill performance. This is due to the air intake temperatures being hot and air at high temperatures carries less oxygen.
When driving an engine hard the under bonnet temperatures quickly build up and the engine has no choice but to suck this air in reducing your power.
Fuel and fuel additives octane and pressure boost valves.
Choice of fuel becomes more critical in a high compression or turbo engine. "One of my Pet(rol) hates!" Fuel: this […]
Weight reduction and lightening a car to increase performance.
Maximise your performance gains with strict weight reduction. "Weight reduction. Putting your car on a diet.." Lighter cars are quicker […]
