Here is an article from AutoOBDTools professional blog. This article is about handling with your car’s ECU.

One of the main reasons for keeping engine tune up schedule is to lower your fuel costs and make your cars fuel consumption remain as low as you can. Here are some other useful tips about how you can increase the fuel millage even more-
from wikiHow – The How to Manual That You Can Edit
As gas prices continue to climb, increasing the fuel mileage is the best way to protect your pocket book. Here are a few ways to spend less money on gas by increasing your car’s efficiency in using it.

Steps

1. Plan your trips. Keep lists of needs that will require a trip and try to accomplish multiple objectives with each. This will not increase your fuel mileage (the number of miles your car moves for each gallon of gas), but it will help you drive less (which, in turn, means you use less gas).
   Read More…

One of a person’s greatest achievements would probably get a car out of his own money. Aside from the money you have shed out from buying your car, maintenance is also another thing you need to spend on. Since this is a machine, it will soon deteriorate at one point or another that’s why the parts need to be replaced or repaired when needed. This is what you call a tune up. If you’re new to car maintenance and have no idea of tune up prices, here is a list of what’s included in tune up.

Once you do a tune up for your car, the following will be done: oil change, oil, fuel and air filter, over-all check-up, replacement of spark plugs and PCV valve, and rotation of the tires. From this list, you will already have an idea that tune ups are costly.

Each of the services rendered for tune ups have different costs. Just for the oil change itself, you will already spend a maximum of $30, depending on the service center you have entered. A maximum cost of $13 dollars is needed for oil filter. The latest PCV valves costs at a maximum of $54. The spark plugs can cost up to $30. Tire rotation can cost up to $2.50 only. The cheapest air filter only costs $15 while the most expensive one can reach up to $128. If you’re going to use the low quality fuel filter, you will only spend $11, but for the best quality, you will need to shell out $95.70.

From the services and items listed, you will already have a total of $144.50 to $353.20. The labor charge is still not included here. The service charge depends on the service center you have entered. For example, you have chosen to enter the quality service center. The service charge will be based on the number of hours the laborers spent on doing your car’s tune up times the shop’s standard rate (ex. 4hrs * $60).

From all the trouble you have caused the laborers plus the cost of the items needed to be replaced, expect that tune up prices will reach a maximum of $500. However, you can look for discount coupons online. The tune up can be done once in a year. It shouldn’t matter whether you’ll spend a lot as long as your car is in a good condition.