1. What is the Surbo used for?
A: The Surbo is for pulling in air from the atmosphere more quickly through the air filter, to match rapidly increasing fuel pressures during acceleration. The result is that the rpm limit is achieved with just half throttle, fuel consumption is reduced by 10% on average, and exhaust emissions including CO2 and diesel smoke are lowered.
2. Can the Surbo be fixed for diesel engines?
A: Yes, please refer to diesels regarding advantages of Surbo for diesel vehicles.
3. Can the Surbo be installed for fuel injection engines?
A: Yes, it works for most engines, EFI or carbureted.
4. Can the Surbo be installed in a very old car?
A: Yes, as long as it does not have any major problem and the Surbo installation is airtight. Let us check your engine and replace any broken air tubes around the manifold or engine oil compartment before fixing the Surbo.
5. Is it easy for the Surbo to be fixed?
A: Yes, with our experience, the time taken for Surbo installation is around 1 hour per car.
6. Which parts of my engine will be removed before installing Surbo?
A: The air filter and the main air pipe after it will be taken off first. The Surbo will be installed in a suitable cylindrical section in that, and after that as far as possible all parts taken off will be reassembled like the original. We will inform you beforehand of the visible changes if any, before starting the job.
7. Will the Surbo replace my air filter?
A: No, the Surbo normally does not replace any original part. It may be inserted in the main air pipe after the air filter, or in the filter box outlet, or inlet, with suitable rubber adaptors. If the original air filter case has been replaced entirely by a round one on top of the engine so that there is no pipe to put the Surbo in or on, we may request for the original air filter setup.
8. Can the Surbo be installed with an open cone filter?
A: Yes, if there is a pipe section in the air intake.
9. Do I have to modify my engine for Surbo installation?
A: No, normally no cutting or mods are necessary for Surbo installation. In most cases it is better to keep it all original as the materials are of better quality, and it may also be easier to fit the Surbo on original equipment. However, if some parts of your engine has been changed by a third party, and there is any rectification necessary, we will inform you before the job commences.
10. Can I install the Surbo myself?
A: Yes, with a guide from us, if there is no Surbo dealer in your area. After that, if you like, you can apply to become a dealer in your area.
11. Can the Surbo be put on a motorcycle?
A: Yes, please refer to Surbo for motorcycles.
12. How can I remove the Surbo?
A: The Surbo is easily removed in ten minutes with simple tools like a screwdriver.
13. Before servicing, should I remove the Surbo?
A: Usually the Surbo's installation spot is untouched by the mechanic. However, if it's a major service, you might like to remove it with simple tools such as a screwdriver. After servicing, we recommend that you ask your Surbo dealer to refit the Surbo. Otherwise you can DIY if you had been instructed by the dealer the first time the Surbo was installed.
14. Will I be able to feel the improvement immediately?
A: Sure! No feel, no sale! With the Surbo, your engine will reach the red line on the rpm meter with half throttle if your car is manual. If your car is automatic, you will get a more sensitive throttle, higher rpm than normal if desired. The gearbox changes up or down easily too.
15. Can the Surbo give better performance, and a smooth sail?
A: Yes, click here for examples of better acceleration and higher top speed. Accelerating becomes easier even in the top gear so the trip time can be shortened for comfort.
The Surbo moves the engine smoothly with a moderate air pressure that gives more power to the engine, so that the accelerator is pressed less, bringing less engine noise. Engine vibration is reduced as the cylinders become more balanced as each of them gets this additional air pressure, whereas in a normal engine only the compression and ignition cylinders are under pressure and the intake and exhaust cylinders are not. This also reduces engine-induced vibrations at other parts of the vehicle. The reduction in vibration increases smoothness and efficiency of the engine, which aid fuel economy.
16. Is there anything else that I have to add to enhance the Surbo's performance?
A: There is probably no need, as the Surbo is able to deliver adequate performance on its own.
17. My car is already modified with added power. Can the Surbo increase the power further?
A: Yes, most of the time that is possible. Please refer to "The Real Thing".
18. How much acceleration power can the Surbo add?
A: Around 30%. For example, the owner of a 125 bhp Civic ESi (with Surbo) said it overtook his friend's 160bhp Civic VTi, by half a car up to gear 3. This shows that at low gears, the Surbo effectively raises acceleration power by 30% (=160/125). In terms of torque, the Surbo can raise it by up to 18% as shown by the Dynamometer Test. In terms of 0-100 kph timing, a Proton 1.5 EFI takes 8 seconds to 100 kph, down from 11 originally (this result was achieved two times, once by our dealer Ah Tee in Kuala Lumpur and another time by a customer).
19. Can 2 Surbos be installed in 1 vehicle?
A: Yes, that's called the Twin Surbo, that delivers 10% more torque than the single Surbo in the 2500-3000 rpm band, and thereby an advantage of 5% in fuel saving. This comprises of two aligned Surbos joined together with no more than 1.25 inches of space in between, totalling 11 inches in a straight line only. If you already have one Surbo and are satisfied with it, you can add another to form a Twin if space allows.
20. Does the Surbo require electricity?
A: No, it is worked by engine back pressure from slight closure of the throttle during acceleration.
21. Is there a switch to turn the Surbo on or off?
A: Your right foot is the only control. Please refer to How Surbo Works
22. What principle is the Surbo based on?
A: Please refer to How Surbo Works
23. How does the Surbo force air into the engine, and from where does it get the power?
A: Engine vacuum is initially used to pull air straight through the Surbo during acceleration, until at around 2500 rpm or at half throttle,
the accelerator is released slightly to back pressure the Surbo to produce pressurizing jets, and a vortex. Upon subsequent acceleration on half throttle, the jets and vortex are maintained by the resultant pressure ahead, for added air flow.
The two following pages can also help answer this question.
1. Energy Analysis of Surbo System.
2. How Surbo Works
24. Will the Surbo damage the pistons?
A: No, this page shows that the ultimate pressure in the cylinders is actually lower with Surbo, as half throttle (moderate air compression) already brings the engine to the rpm red line.
25. Can the Surbo damage the engine?
A: No. 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. Therefore, with the Surbo the engine is likely to have a longer life.
26. Do I need to use 98 octane, or 92/95 octane after Surbo installation?
A: 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, which can cause a flame coming down at the piston that is still going up. This is called engine knocking and can damage the engine. However, with 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.
27. Can the ECU override the Surbo? What happens when more air than usual goes into the engine, so that the air-fuel ratio goes up? Isn't there supposed to be a constant air-fuel ratio?
A: The ECU will inject fuel based on absolute air pressure calculations, either via the manifold absolute pressure sensor, or air flow meter, for ideal combustion. When the Surbo is activated during acceleration and air flow is increased, the fuel flow rate will be automatically adjusted. The resulting increase in torque means that higher speeds will be attained sooner, and the vehicle can cruise in less time, and start saving fuel. Wikipedia has shown that the fuel injected at any moment is proportional to how much the accelerator is pressed, rpm, and number of cylinders firing. As the smooth air flow from the Surbo pushes the engine, less effort and less fuel is required for acceleration, reflected by a lighter throttle. The Surbo does not and cannot cause a lean mixture due to the ECU allowing more fuel if there is more air, but to reiterate, the Surbo does make the vehicle gain speed more quickly and so saves fuel. In normal cases without the Surbo, air comes in more slowly than fuel (which is pressurized by a pump), and in an effort to increase acceleration, the accelerator is often pressed more, leading to excess fuel, flat spots, carbon deposits and increased emission. The Surbo, with its stronger air suction, prepares the air to match this rapidly increasing fuel pressure during acceleration.
28. Is there a difference if the Surbo is fitted before or after the air filter? If it is fitted before the filter, how is the air going to spin into the engine?
A: The answer is the Surbo is activated by a back pressure from the engine, which is the same whether the position is before or after the air filter. This backward air pressure makes the Surbo jet and pressurize the air at its outlet, and that forms a vortex within the Surbo itself, which increases air suction. The driving feel of a Surbo fitted before or after the air filter cannot be easily differentiated.
10% fuel saving with mixed driving and more on highways
Faster acceleration, especially from standstill for automatic cars
Higher top speed, which means easier cruising
Higher RPM capability, rev limit possible with just 1/2 throttle!
Instant automatic gear kickdown
Safer, more confident overtaking
Better hill climbing power
Less diesel smoke, even with more speed
Reduced CO2 emissions from vehicles
Money saved, more than from fuel savings
Transferability. Use your Surbo on your next car
Lifetime warranty on both the Surbo and installation
How Surbo works
What is Surbo?
The Twin Surbo, 2 Surbos in series for even more low rpm torque
Surbo versus other engine accessories and parts
When the Surbo is most useful
Dynamometer Test Results
How Surbo increases engine compression at low rpm and prevents excessive compression at high rpm
How Surbo increases engine efficiency
How Surbo prevents harmful engine knocking
How Surbo may help your engine so it can last longer
FAQ: Frequently asked questions
How Surbo works for diesel engines
How Surbo's increased air density enhances diesel technology, and raises peak RPM
Diagram: Surbo's effect on the whole vehicle
Diagram: Surbo on petrol turbocharged engines
Diagram: Surbo on diesel engines
Diagram: Surbo on turbo diesel engines
Some vehicles recommended for Surbo
Automatic cars fitted with Surbo
Manual cars fitted with Surbo
Surbo5 for larger engines
Petrol turbo cars fitted with Surbo
Petrol CVT cars fitted with Surbo
Petrol hybrid cars fitted with Surbo
Petrol supercharged cars fitted with Surbo
Natural gas car fitted with Surbo
Diesel and turbodiesel vehicles fitted with Surbo
Motorcycles fitted with Surbo
Photos of Surbos installed in various cars
Why choose Surbo?
Surbo will pass vehicle inspections due to lower emissions
30 day money back guarantee
What happens during the Surbo installation
List of Surbo dealers by country
Buy Surbo online with installation guide, if there's no dealer near you
Join us as dealer for your area
Surbo on racing gokart
Surbo on Honda Civic (runner up in Singapore race)
Surbo wins India race
History of the Surbo company
How the Surbo came to be
Aftersales service and advice, on accessories or compatible vehicles
User guide for Surbo
Automotive engineering and other applications of Surbo