10% FUEL SAVING ON AVERAGE
Case study: Chevrolet Captiva 2.4
A Nissan Latio 1.5 CVT turned up with an extra hot engine. The owner confirmed that there were knocking noises when he accelerated. After the Surbo was installed, he noted that the knocking noises were gone. The accelerator felt lighter, and he was actually pressing less so the tendency for over-fueling, and therefore knocking, had decreased. Through a corner, he said that the power did not slump as before (reason being that the Surbo charges air when the accelerator is held still). The gearbox would also find a lower ratio more readily when he accelerated while cruising.
A petrol engine knocks when compression is so high that the air fuel mixture ignites by itself before the spark occurs. The result is a flame front coming down at the piston that is still on its way up, and this causes noise and power loss, and even damage to the cylinders. When is knocking (otherwise known as pinking or detonation) likely to occur, and what can you do?
1. When too low an octane is used. Normally, petrol with octane number (RON) that is too low can't be used in high compression engines, because the petrol under pressure can ignite itself prematurely. However, if you use a Surbo, you can use petrol with a lower octane than recommended by the car manufacturer, because the accelerator is often pressed less, resulting in less fuel injected, so the chance of knocking is reduced.
2. When some fuel additives are used. These may make the fuel too easy to burn and so knocking occurs, audibly as a "clack clack" sound. If you use a Surbo, this may be less likely, because the accelerator will not have to be pressed as much for the same acceleration. If the purpose of using the additive is to save fuel, then it may not be required as the Surbo saves at least 10% fuel.
3. When too high a gear is used and the engine cannot turn fast enough, and the accelerator depressed too much in an effort to move the vehicle. As a result, the fuel that is injected is excessive and can cause knocking. For example, in second gear at a low rpm, it is often difficult or even impossible to shift down to first gear, acceleration is poor and overfueling and knocking can occur easily. If a Surbo is used, the air intake pressure is raised, and low rpm torque significantly increased, so the tendency for knocking is reduced. For automatic tranmissions, in such instances the gearbox is more able to kick down to first gear with slightly added pressure on the accelerator, which sends more of the Surbo's pressured air into the engine, allowing for higher rpm required for a lower gear.
4. Whenever the accelerator is pressed too much. With a Surbo, the driver may never have to floor the accelerator, because the Surbo sends the engine to its rpm limit with just 1/2 accelerator pressure. The engine with Surbo does not have to work as hard as before, as it is aided by the air pressure from the Surbo. The increased torque means that the accelerator does not have to be pressed as much as before, so the fuel injected and heat created in the engine is less, and the likelihood of engine knocking is reduced.
Watch the video above showing how an engine revs with Surbo. Or watch it with the How it works page.
Above: video of Volvo XC90 T8 with Surbo, sprinting to 130 kph.
Above: video of Volvo XC90 T8 with Surbo, sprinting to 211 kph.
Above: video of Volvo XC90 T8 with Surbo, sprinting to 224 kph.
More torque and horsepower (dyno test)
Quick throttle response
10% fuel saving
Easy revving (1/2 throttle to RPM limit)
Instant auto gear kickdown
More power uphill
Higher top speed
How Surbo feels (by car type)
Compatible new cars
Vehicle inspection compliance
How Surbo works
Surbo5 for large engines
Reduced turbo lag
Surbo vs other accessories
How Surbo can be used
Optimal air compression
Allows lower octane (less engine knock)
Longer engine life (lighter throttle)
Less diesel smoke
Reduced CO2 emissions
Other applications for Surbo
Surbo wins race in India
Runner up (S'pore race)
During the installation
Re-installation (fits most cars)
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Note: the Surbo is not a moving fan. Beware of other sellers who use our trademark Surbo to sell their products.