How To Better Gas Milage

[ilrandomheroil]

ya i have a 2000 silverado 4x4 with split flowmasters and a 4.8L V8 vortec engine. I get 300 miles on a full tank and that cost me about 80 bucks to fill up. is there anything i can do to improve this?

 

i just got my oil changed, a chip is a bit expencive but it might be my only option other than a cold air intake. i bought this resister that is suposed to help but i think its crap lol, but i do think it added some horses. anyone tried one of them. It goes in the iat sensor and is supose to add up to 20 horses and 10mpg. now it varries for each type of vehical but that is the best it does. so is it bs or is there something to it.

 

still any other ideas are gladly welcomed.

[pottercon]

The only way iv found to get better mileage is to drive easyer and slower, but who wants to do that!

[ilrandomheroil]

d**n i like your truck. but ya, i know i can chip it, get a cold air intake, maybe new spark plugs and upgrade the gas im using, i was just curious if there were any little secrets people wanted to share.

[pottercon]

d**n i like your truck. but ya, i know i can chip it, get a cold air intake, maybe new spark plugs and upgrade the gas im using, i was just curious if there were any little secrets people wanted to share.

 

THANKS,

 

you can do all that but wont see any noticable difference,just my experiance

[ilrandomheroil]

alright, well it wouldn't be so bad if i had a job makin a decent paycheck, but being 16, its hard to make above 6$ an hour lol.

[Wingnut]

Other than driving like a granny, the ONLY thing I've ever added to a vehicle that improved fuel economy at all is a tune. I even got the performance tune in my SS and still gained 1mpg.

 

Of course, YMMV ;)

[ws6_guy]

that things supposed to add 10mpg? noooo way thats ever happening with any modification lol there is no such thing unless your coasting down a 10 mile hill. Be careful with what you buy out there, like on ebay, #1 source for scams.

 

Get a PCM tune that will help a little, like 2mpg at most, betters the engine power and re-adjusts the transmission shift points so you can get better mileage. And as others have said easy on the throttle, keep it under 2000rpms helps too

[Draenor]

Ditch the resistor thingy. All its doing as fooling the ECM to ADD more fuel. The CAI isnt going to help either. There are no "secrets" to better gas mileage or GM would of used them for better MPG figures to beat the competitors.

 

 

The only way would to drive like grandma, or buy a prius.

[ilrandomheroil]

alright. well would a cold air intake do anything to help?

[Nice rig]

Nope...nothing that would offset the cost of it. Only thing I noticed was a slight loss on the low end, so I removed it and it's still sitting in my garage in the box. Spend your money on a tune if you want to by something.

[ilrandomheroil]

so whats the point of getting a cold air intake? i thought it added horses and mpg's. and what kind did you have and are you selling it?

[Nytemare]

I have noticed a couple extra miles per tank if you use your cruise as much as possible.

 

if you have aggressive tires that will hurt you, using A/C will kill your mileage, winter time will also drop your mpg...same as the resistor thing, your ECM dumps more fuel at colder temps due to having a denser air charge...denser charge means you can support more fuel in the mixture.

 

Changing your belt driven fan with an electric unit will gain an mpg or 2, a tune like was stated will give you 1-3mpg increase depending if its an economy tune or performance tune, aside from this, ensure you keep your tire pressures in spec, and keep you fuel/intake system clean for peak performance.

 

I have an 03 with the 4.8, a dual FM exhaust and a heavy right foot, I get 300miles per tank, at $120 per. Fuel is almost $5 a gallon in Victoria Canada, and I use 92 octane. I also fill my tank at least once a week. I've gotten to the point that if its empty fill it, drive it like I want to and laugh when they say the total, theres very little I can do about it, and spending 700-1000 bucks to remedy the situation and save 200 bucks a year is just pointless.

 

As for the CAI...you already have one stock, the air is drawn from the fender into the stock air box, which is exactly what a CAI is. Its the Tubing between the Box and the TB that is restrictive, you can replace this for under 100 bucks. There are various posts on here about this subject.

[ilrandomheroil]

no i know what a cold air intake is but i was wondering what some of the advantages of replacing it would be.

[Nytemare]

Advantages are more hp in the mid and high rpm range (if your in this range all the time you will definitely not be saving fuel), and a louder engine note. As for increased Fuel economy, it wont be enough to offset the cost of the intake.

 

Like everyone said, get an economy tune from someone like wait4me (150 bucks or thereabouts), this is the most beneficial modification you can make for fuel economy. Anything else would take longer to recover the cost, than it would be worth.

[chakis24]

a tonneau cover will give you a little more. maybe 2. anything you put into it though to gain mileage, your gonna have to keep it awile to recoup the cost. number one thing though is to drive like a grandma. thats your best bet. regearing might help a little bit, but thats money as well.