Digitalchaos
Registered User
With the increasing gas prices across the nation, I believe it would be beneficial to create a new thread about gas mileage. There are two specific issues dealing with gas mileage which I would like to see addressed.
First, city driving versus highway driving. As many already know, in many vehicles there is a significant difference in fuel economy when traveling short city distances versus long highway differences. Numerous issues have been sited for these differences, including energy wasting stop and go, idle time, efficiency of engine and various RPMs, engine temperature, and others. I would like to obtain information dealing with which of these factors, or perhaps even others, make the biggest contribution to the difference between city/hwy driving. Is there one big thing which causes the most difference, or are these differences really the result of many smaller factors combined?
Next, fuel efficiency improving modifications. This has been covered before, but I think it can always be beneficial to add more detail and acquire new information. Of all the variations which can be made to this car to alter it from stock form, including internal engine, ignition, intake/exhaust, drivetrain, suspension, tires, ect.. which things might have a positive effect on the efficiency of the engine or overall gas economy? What are the realistic differences which can be seen from these modifications? I know, for example, that exhaust modifications which increase airflow while maintaining emissions equipment have often been sited for increased fuel economy, though the difference is not normally discussed. Another example, how might changes to the ignition system, like relocated DIS module for less heat, different plugs/wires/gap, aftermarket modules, ect increase combustion efficiency, if they even can?
Just some recent thoughts resulting from my observations of ever increasing fuel prices, and confusingly watching as my last tank got over 300 miles in normal city driving..
First, city driving versus highway driving. As many already know, in many vehicles there is a significant difference in fuel economy when traveling short city distances versus long highway differences. Numerous issues have been sited for these differences, including energy wasting stop and go, idle time, efficiency of engine and various RPMs, engine temperature, and others. I would like to obtain information dealing with which of these factors, or perhaps even others, make the biggest contribution to the difference between city/hwy driving. Is there one big thing which causes the most difference, or are these differences really the result of many smaller factors combined?
Next, fuel efficiency improving modifications. This has been covered before, but I think it can always be beneficial to add more detail and acquire new information. Of all the variations which can be made to this car to alter it from stock form, including internal engine, ignition, intake/exhaust, drivetrain, suspension, tires, ect.. which things might have a positive effect on the efficiency of the engine or overall gas economy? What are the realistic differences which can be seen from these modifications? I know, for example, that exhaust modifications which increase airflow while maintaining emissions equipment have often been sited for increased fuel economy, though the difference is not normally discussed. Another example, how might changes to the ignition system, like relocated DIS module for less heat, different plugs/wires/gap, aftermarket modules, ect increase combustion efficiency, if they even can?
Just some recent thoughts resulting from my observations of ever increasing fuel prices, and confusingly watching as my last tank got over 300 miles in normal city driving..