If you want to improve your gas mileage you have to be aware that the way you drive can have a large effect on our mileage. Driving at slower speeds, easing off on the gas and brake pedals, and using cruise control appropriately are all ways for improving fuel efficiency. Similarly, a well-kept car with properly inflated tires and perfect alignment can extend the life of the gas tank.

When you combine solid driving habits with careful vehicle maintenance, you may significantly improve your fuel economy. Additional vehicle modifications, on the other hand, can assist individual drivers to improve their fuel efficiency.

How to Improve Gas Mileage - Rainbow Muffler

How to Improve Gas Mileage – Rainbow Muffler

Real-Time Engine Monitoring

These devices connect to the vehicle’s On-Board Diagnostic System, or OBD II, which has been the updated on-board diagnostics standard in US vehicles since 1996. These devices provide real-time data such as battery voltage, coolant temperature, and fuel economy readings. Fuel economy instrumentation like ScanGauge’s OBD II Computer and HKS’ CAMP2 measure fuel quantity data from the vehicle’s injection timing. In other words, the longer the injectors are open, the more fuel they release. What are the benefits of these gadgets in terms of fuel efficiency? Drivers receive immediate feedback on how their driving behaviors impact mileage. If you accelerate hard off the line, the display will almost certainly show a considerable (and rapid) loss in fuel economy. Drivers learn to accelerate more smoothly and drive a little slower as a result of this training.

Vacuum Gauges

A vacuum gauge is a low-cost, low-tech gadget that monitors the manifold vacuum and offers instantaneous fuel economy measurements. It works like this: increased manifold vacuum equals increased mileage. These dials, which look similar to other dashboard instrumentation, tell customers how effectively they’re driving in terms of fuel efficiency. Drivers can learn to accelerate in ways that maintain high and stable gauge pressure through practice and feedback from the vacuum gauge.

Grounding Cables

The electrical system of a vehicle includes grounding wires and cables. To operate systems such as lights, fans, stereos, and air conditioners, a vehicle relies on an electrical network-fuses, relays, and electrical wiring. Because they are all connected to the battery’s negative terminal, all of these systems share a common ground. Resistance rises as the connections deteriorate or loosen (because the amount of conductive material decreases). As a result, the electrical system as a whole has to work harder. This can cause a range of issues, such as slow throttle response and reduced fuel efficiency. For a very little investment, quality grounding cables can improve your car’s performance and gas mileage.


Some car owners in the past (particularly those who owned so-called “muscle cars”) spent a lot of effort and money trying to improve the speed performance of their vehicles. The world has changed. Many car enthusiasts nowadays are more concerned with improving their fuel efficiency. 

Other projects, such as changing the shape of the vehicle to improve aerodynamics, are mainly saved for individuals with the time and motivation to work on custom modifications.

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