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Gearbox – Lower ratios give better acceleration times and lower fuel economy. Six or seven speed boxes are better matched to modern engines.
Most street applications are closer 1st and 2nd gear ratios for that off the line 0-60 boost or for the fast exec a lower 2nd and 3rd ratio give improved overtaking flexibility and 30 – 70 mph acceleration with a high 4th and 5th gear to give motorway fuel economy. Read More...
Blow off valves, dump valves and screamer pipes
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. Read More...
General engine tuning tips
"Tuning Modz"
Engine Tuning an overview.
Engine tuning depends largely on the base engine size and to a large degree depends on the amount of tuning done at the factory. The larger the engine the larger the gains will be.
Each type of engine have different characteristics for example the Honda VTEC is very high revving.
However a large v8 lump provides power in a very lazy manner at low revs.
Adding turbos or superchargers further alter the characteristics of the engine and some modifications will actually cause a loss of power if applied to the wrong engine type.… Read More...
Improve safety and braking of your car
Safety Mods
"Play it safe."
When one starts modifying a car, little thought is usually given to the safety of the car.
Manufacturers spend millions to ensure our cars are safe for the occupants and those outside the car.
Each country has its own list of regulations that even the DIY car tuner has to comply with. They usually relate to the construction of the car.… Read More...
Todays featured car modification articles
Performance Clutches
Clutch tuning: performance clutch modifications and triple plate clutches setup More...
Fuel Octane Ratings
Fuel octane ratings RON, MON, AKI RdON and PON explanation and compared. More...
