This article will not tell you to do the speed limit, or fill up at a certain time of the day with gas, or seed up before going up a hill to help your miles per gallon (MPG) in what ever car you drive. This will explain and tell of two very easy products to obtain to get four to six more mpg no matter what you drive, and I am not selling you anything.
You here constantly about replacing your factory air filter with a new on but unless you are replacing it with a K&N that you washed off, your wasting your time. Your factory air box and tubing system on the car you drive, from Honda to Saturn, is very very restrictive. Why you might ask is because of mass production and that it is cheap, the plain and simple of it. You engine is nothing more than a glorified air pump. The factory system of that pumping is restrictive so that you don’t hear the pumping and to keep costs as cheap as possible to the auto maker.
The first part is getting air into your engine and the factory system has bends, ripples and a very small surface area filter. (See fig.1)
Part of not only your power loss of the engine but your mpg is all that black factory air intake piping. To better your mileage, I suggest a small investment in an air intake kit for your car. You can go from a simple short ram from AEM to a cold air from AEM or Injen. Though not all people have a load of money to spend on their car for a intake, just go to Ebay. Type your car in for a air intake and one will pop up. Now asking the better of the two, short ram or cold air, is a performance steered question and since this is for mileage, it is ill relevant.
A little disclaimer for some of you who go for this may hear an air sucking type sound when you hit the gas heavily or when you start it up on a cold morning. If this does per say bother you, than this is not the best gas getting option for you. But give it a try. The sound may not bother you when you see that you get 60 to 100 more miles to a full tank.
Not to leave out the other aspect of replacing your factory air intake system is the power gains. Now I am not saying anything huge, but every three to five hp helps out.
The other change out you can do to better your mileage that continues with the engine air pump statement is the air leaving the engine. This is the second most restrictive part of your cars propulsion system. The piping under you car is a set of pipe with baffles and a resonator with a muffler out the back to keep things quiet.
Step up the pipe size but keep your factory muffler. You can purchase resonators to complete the system to make things even quieter than what they are at now. Yes to the BMW owners this article goes to you two and your exhaust can get even softer sounding.
If you think to go to Midas or a chain store exhaust shop, forget it. You are only buying the same factory mess of metal that you already have. You need to go to a specialty exhaust shop or a pipe fitter. The price for this should be some where around $150 to $200 depending if you want extra quiet or different mufflers and the such Ask your local teens with the loud Honda Civic where to go, they know. Have them step your pipe size up a quarter of an inch. You will make the car exhale better, and save some bucks when you fill up again.
Changing your driving or driving slow will not help your gas mileage out enough to make leaving an hour earlier than normal to get to your destination worth it. The problem is the pumping of air into the engine and making it easier for the engine to do will please the car, the tank and your wallet.