Devices To Improve Gas Mileage – The better the engine can convert air and fuel into energy, the more power it can push and the more power it can extract from the gas. General Motors can build a 450 horsepower Corvette that gets 30 miles per gallon on the highway.
There are two parts to the efficiency equation: improving performance and maintenance. The second half is a given, but maybe the first half will surprise you. Conventional wisdom says that performance comes at the cost of fuel economy. More often than not, the conventional wisdom is wrong. Many performance-oriented parts are designed to increase engine efficiency. As we know, the more efficient the engine, the more power it can produce without using fuel.
Devices To Improve Gas Mileage
Most vehicles we drive every day have computer-controlled fuel injection engines, so the performance parts we’ll discuss are designed for that application. We will focus on the following categories.
Easy Tips To Improve Your New Subaru Or Any Car’s Fuel Mileage This Summer
A gasoline engine is basically a glorified air pump, so the amount and type of air you use is critical to performance. Factory air intakes are designed with noise and cost reduction in mind, not airflow. High-flow, reusable filter cartridges are a great place to start your retrofit program – the additional airflow improves energy and fuel efficiency. The next step is the cold air intake system. Replace the limited factory air intake with a high flow filter cartridge and large diameter ducting to draw in cold, dense air. Cooler, denser air contains more oxygen, and the engine uses this oxygen to produce more power. A cool air intake improves throttle response and overall drive and improves fuel economy if you run out of gas.
Other upgrades to improve airflow include throttle body spacers and a high-flow throttle body. The throttle body spacer is a bolt-on upgrade that easily fits between the throttle body and intake manifold. Most models work by accelerating or rotating the incoming air and increasing its speed. It helps improve performance and fuel consumption at low and medium rpm. High-flow throttle bodies are more suitable for engines with upgrades such as intake manifolds, cams or cylinder head replacements, or high-flow exhausts to use the extra airflow.
If your performance upgrades are limited to bolt-ons like a cold air kit or cat exhaust system, your stock fuel system should be able to provide the fuel you need. Larger fuel injectors and high performance fuel pumps are only necessary for major engine modifications (head, camshaft, supercharger, etc.). Fuel economy may not be your top priority right now.
Keeping the fuel system clean, especially the injectors, will help maintain performance and mileage. Clean injectors spray fuel better, improving economy and performance. Ritual fuel filter replacement and regular use of a high-quality fuel system cleaner will keep injector nozzles free of dirt and debris.
Energy Efficient Driving
Exhaust System Just like forcing more air into the engine, getting more exhaust gas out of the engine can improve engine performance and efficiency. The most effective way to do this is to replace the factory exhaust system with a high flow cat exhaust system. As the name suggests, the Catback replaces the factory pipes behind the catalytic converter(s). It has a larger pipe diameter and a free-flow muffler that further cleans the exhaust gases from the engine. Improved exhaust clearance allows the engine to draw fresh air/fuel into the cylinder head more quickly, improving performance and mileage. A catback will also make the car sound good.
While OEMs have made great strides in designing efficient exhaust manifolds, a good set of pipe headers (or headers if you have a four banger) is still more efficient. Although the head unit is more involved in the installation, the head unit combined with the cat system will improve your performance. In some cases, fuel economy will stay the same or improve slightly.
Two other components that affect performance and mileage are the lambda sensor and the catalytic converter. The oxygen sensor monitors the oxygen level in the exhaust gas stream and sends information to the engine control module (ECM), which adjusts the air-fuel ratio of the engine based on this data. If you experience a drop in mileage and performance between 50,000 and 75,000 miles, it is most likely the sensor. If it fails, the computer switches to a default mode that uses a richer air/fuel ratio (more fuel than air) to protect the engine from damage. New O2 sensors are cheap and easy to replace.
The primary function of a catalytic converter is to convert combustion byproducts into relatively harmless CO2 and water. Over time, the core of the converter fills with dirt or separates from intense heat. A bad cat will build up dirt in the exhaust and cause the engine to become inefficient due to increased pressure. If federal law prohibits the removal of a working converter, you can replace the damaged converter with a high-flow converter that does not restrict exhaust gas flow.
How To Get Better Gas Mileage
A strong and reliable spark is essential for efficient combustion. A misfire or weak spark due to incomplete combustion of air/fuel in the combustion chamber costs energy and mileage. Later model cars do not have computerized ignition timing that can be adjusted by the owner, but you can keep the system running by checking and replacing the following parts as needed.
• Distributor cap and rotor: These should be replaced every 75,000 miles. Look for carbon deposits, worn contacts, cap cracks, and worn/burnt rotor contacts.
• Ignition leads: Leads should be replaced approximately every 75,000 to 100,000 miles. Look for loose or damaged outer jackets, boots, and terminals.
• Spark Plugs: Most modern platinum spark plugs can easily last 100,000 miles. The plug should be checked regularly; draw steam and look for burned or melted electrodes (lean / hot condition) black carbon deposits (rich condition); and oil build-up (engine oil burn)
How To Improve Fuel Economy
On-board electronics include the ECM and related sensors. These include air, oil and coolant temperature sensors, throttle position, spark knock and air flow (air mass) sensors. A bad sensor can affect performance and fuel economy, and if left unattended can damage the engine. Most sensors “remove and replace” items; A good diagnostic scanner or code reader can help clear the Check Engine light properly and identify the faulty component.
Emission system equipment affects fuel consumption. Remove the EGR valve. This allows a metered amount of exhaust gas to return to the combustion chamber. This gas cools the air and fuel and reduces the formation of nitrogen oxides (NOx), which causes smog. If the EGR valve is stuck open, it can cause vacuum leaks, idle and hesitation. If the valve is blocked, the combustion temperature will rise and an explosion will occur. Each condition affects mileage and driving characteristics.
One upgrade that can provide performance and mileage benefits with minimal effort is a flash tuner or programmer. They can improve performance by changing the fuel settings and computer time; Simply plug one into the car’s diagnostic port, select a tuning level and press the button. Performance gains can range from 20 to 100 horsepower, and some programmers have fuel economy that can increase mileage by 2 to 6 miles per gallon. Most programmers allow you to reset or remove rev and upper speed limiters, change the shift point of the computer-controlled automatic transmission, and reset the speedometer to compensate for the axle ratio and tire size.
Now we come to another part of the efficiency equation: maintenance. Regular oil and oil filter changes matter in terms of performance and mileage. Clean oil reduces friction and wear and allows the engine to spin cleanly and run at maximum efficiency. Switching to a high quality synthetic oil is a very good idea. Synthetic oils reduce friction and wear more than conventional oils, improving performance and fuel economy. Synthetic oils have longer change intervals.
How To Increase Fuel Economy In Your Pickup Or Rv
Be sure to check and replace the timing belt, auxiliary drive belt, thermostat, hoses and lines, and if necessary, the PCV valve. Check the throttle body and air mass sensor (if equipped) and clean the carbon deposits. Make sure all fluids are clean and at the correct level. Little things like that can make a big difference to engine efficiency.
The condition of your car’s tires and suspension can affect performance and fuel economy. A tire that is underinflated by 2 psi increases the rolling resistance, which makes the engine harder to run and uses more fuel. Follow the air pressure recommended by the manufacturer in the owner’s manual or on the door frame label. Worn front suspension/steering components and poor tire alignment can increase rolling resistance and reduce fuel consumption. Symptoms include uneven tire wear, erratic handling, traction and steering.
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