Better gas mileage
Site Moderator
Joined: Jan 2008
Posts: 8,374
Likes: 28
From: Sioux Falls, SD
2. Cheap Ebay CIA 5mpg
3. Gor rid of my 200 lb cap. 2mpg
I get 17.9 mpg now...........tires need replacing but I had been up to 20 mpg when my tires were new
If you state that's in town, DEFINITELY throwing a BS flag down.
All Star
Joined: Oct 2007
Posts: 955
Likes: 10
From: Upstate NY
Properly maintain the V8 engine according to the vehicle's manufacturer guidelines. Changing the oil, oil filter, air filter, spark plugs and other components at regularly scheduled intervals will promote the maximum amount of fuel efficiency, according to fuel-efficiency-tips.com. Change as the manufacturer recommends
Step 3
Wash and wax the V8 equipped vehicle regularly. Okay, it's nice to have a nice clean truck, but having a smooth paint surface, while looking nice, will not give any gains in MPG's, UNLESS your truck is covered 40lbs of mudd, then it's an issue for MPG's
Step 4
Fill the tires of the vehicle with the recommended amount of air deemed by the car or truck manufacturer. Under inflated tires will cause the V8 engine to work harder, reducing fuel efficiency. This is correct. Also going a couple PSI over the recommend pressure can help during the summer months. By a couple I mean NO more than 5 psi. Always make sure your tires can handle the extra PSI as well. Never go above the MAX PSI on the sidewall.
Step 5
Use cruise control when possible. Excessive acceleration and deceleration causes more fuel consumption. Nothing to add here.
Step 6
Accelerate slowly from stops. Never drive faster than the speed limit and utilize the overdrive transmission setting for normal driving if the vehicle has this option. Also Correct
Step 7
Use fuel grades recommended by the vehicle manufacturer. Using higher premium grades will unnecessarily increase fuel costs with no added benefit. It will fact harm the engine instead. Octane is the rating of the fuels resistance to knock. Higher octane then needed makes your engine work harder to burn the fuel. I will stop myself from going further into this.
Step 8
Avoid using the air conditioning system whenever possible as this taxes a V8 engine. Keeping the windows rolled up will also reduce drag on the vehicle. Also correct, however, having the windows down, instead of using the A/C is better.
Step 9
Clear the vehicle of any unnecessary items that can substantially increase the weight of the car or truck. Lighter loads will allow the engine to operate easier while driving. Also useful. Having an clean interior, unnecessary stuff removed from the bed, etc will reduce weight. However, the effects on a 3-4000 pound truck may be negligible.
Maybe you can try this little bugger...
http://www.performancechiptuning.com...aver+Module/3/Okay I must stress this. THIS DOES NOT WORK. Your engine will NEVER be able to completely burn all the fuel. In fact, it's not supposed to. If it does, then the catalytic converter will not warm up fast enough. Unburnt fuel ignites the catalyst. Thats Reason 1. Reason 2 is this: A gasoline engine is a Very inefficient device. Realize this, accept it, and move on. Heat energy losses, drive train losses, and other losses make the amount of power actually propelling the vehicle in the 45% range or there abouts of the 100% of heat energy the motor produces. Just some food for thought. Do not waste your money on this, it's useless, and a magnet has no effect on fuel molecules. Also, this is supposed to be in the fuel line. When the air fixes with the fuel before it enters the cylinder, it will re-randomize itself. Waste of money.
If you have money, get you a hypertech tuner, a good friend of mine has one for his 2005 Power wagon an it works good.Works great, really helps MPG's, but, again, cost effective? Thats for you to decide
Also, you should get a cold air intake kit from spectre or k&n Marginal help here. Not worth the cost. Look into a lower cost intake in you must have one. The 14" round filter is a much better option, however, the MPG gain has not been good so far. Some people have experienced a gain, while others have lost. But, the filter and other items can be had for under $30.
Maybe some e-fans from FF Dynamics, it will take a lot less stress of the A/C clutch, and give you better mpg, and a gain in power as well. Well, yes, By removing the clutch driven cooling fan, your reducing drag on the engine. So yes, by installing an Electric fan, you should see a decent improvment. 1-2-3 mpg's. Not exactly sure what the amount would be on these truck. Never tested it.
Step 3
Wash and wax the V8 equipped vehicle regularly. Okay, it's nice to have a nice clean truck, but having a smooth paint surface, while looking nice, will not give any gains in MPG's, UNLESS your truck is covered 40lbs of mudd, then it's an issue for MPG's
Step 4
Fill the tires of the vehicle with the recommended amount of air deemed by the car or truck manufacturer. Under inflated tires will cause the V8 engine to work harder, reducing fuel efficiency. This is correct. Also going a couple PSI over the recommend pressure can help during the summer months. By a couple I mean NO more than 5 psi. Always make sure your tires can handle the extra PSI as well. Never go above the MAX PSI on the sidewall.
Step 5
Use cruise control when possible. Excessive acceleration and deceleration causes more fuel consumption. Nothing to add here.
Step 6
Accelerate slowly from stops. Never drive faster than the speed limit and utilize the overdrive transmission setting for normal driving if the vehicle has this option. Also Correct
Step 7
Use fuel grades recommended by the vehicle manufacturer. Using higher premium grades will unnecessarily increase fuel costs with no added benefit. It will fact harm the engine instead. Octane is the rating of the fuels resistance to knock. Higher octane then needed makes your engine work harder to burn the fuel. I will stop myself from going further into this.
Step 8
Avoid using the air conditioning system whenever possible as this taxes a V8 engine. Keeping the windows rolled up will also reduce drag on the vehicle. Also correct, however, having the windows down, instead of using the A/C is better.
Step 9
Clear the vehicle of any unnecessary items that can substantially increase the weight of the car or truck. Lighter loads will allow the engine to operate easier while driving. Also useful. Having an clean interior, unnecessary stuff removed from the bed, etc will reduce weight. However, the effects on a 3-4000 pound truck may be negligible.
Maybe you can try this little bugger...
http://www.performancechiptuning.com...aver+Module/3/Okay I must stress this. THIS DOES NOT WORK. Your engine will NEVER be able to completely burn all the fuel. In fact, it's not supposed to. If it does, then the catalytic converter will not warm up fast enough. Unburnt fuel ignites the catalyst. Thats Reason 1. Reason 2 is this: A gasoline engine is a Very inefficient device. Realize this, accept it, and move on. Heat energy losses, drive train losses, and other losses make the amount of power actually propelling the vehicle in the 45% range or there abouts of the 100% of heat energy the motor produces. Just some food for thought. Do not waste your money on this, it's useless, and a magnet has no effect on fuel molecules. Also, this is supposed to be in the fuel line. When the air fixes with the fuel before it enters the cylinder, it will re-randomize itself. Waste of money.
If you have money, get you a hypertech tuner, a good friend of mine has one for his 2005 Power wagon an it works good.Works great, really helps MPG's, but, again, cost effective? Thats for you to decide
Also, you should get a cold air intake kit from spectre or k&n Marginal help here. Not worth the cost. Look into a lower cost intake in you must have one. The 14" round filter is a much better option, however, the MPG gain has not been good so far. Some people have experienced a gain, while others have lost. But, the filter and other items can be had for under $30.
Maybe some e-fans from FF Dynamics, it will take a lot less stress of the A/C clutch, and give you better mpg, and a gain in power as well. Well, yes, By removing the clutch driven cooling fan, your reducing drag on the engine. So yes, by installing an Electric fan, you should see a decent improvment. 1-2-3 mpg's. Not exactly sure what the amount would be on these truck. Never tested it.
I've gotten rid of some stuff, and added some stuff. Feel free to re-read. I hope this helps you out more....
Last edited by CSCustomCars; Aug 8, 2010 at 01:43 AM.
All Star
Joined: Jun 2009
Posts: 970
Likes: 0
From: Dacula GA
From my experiences, I can say there is only one modification I have done that gave me a clear and for sure Mileage gain. FF Dynamics Dual E-fans. 1.3- 1.5 MPG gain. For under $300 
Colder A/C, more HP, trucks runs cooler, better throttle response. ++++
Colder A/C, more HP, trucks runs cooler, better throttle response. ++++
Legend
Joined: May 2005
Posts: 8,662
Likes: 7
From: Central Oklahoma
I know this has been covered on here somewhere but i cant find it. So i'll ask. I have a 1997 1500 4x4 with the 5.2 V8. It has 184,700 miles. When i do all city driving i get anywhere from 11.2 to 11.7 MPG. With mixed highway and city the best i've gotten is 12.7 MPG. I went like 285 miles on that tank. I'm in high school and i cant be blowing all my money on gas. I was wondering if any of you guys have any ideas of how i could get better gas mileage? CAI maybe? It already has a flowmaster 40 series on it. Any help would be appreciated.
Thanks
Thanks
Administrator
Joined: Jul 2007
Posts: 24,686
Likes: 21
From: South Georgia/East Florida
By far the best bang for your buck is to keep up on all the maintenance and use synthetic fluids wherever you can. Also keep a regular check on tire pressure. Underinflated tires is the #1 cause of losing fuel economy.
That said, I think the ONLY MPG mod you can do that will pay for itself without having to wait 100,000 miles would be an efan. A relatively inexpensive part (especially if you go the pic 'n pull route) that not only yields a sold couple of MPGs gain, but also frees up a good amount of horsepower...
That said, I think the ONLY MPG mod you can do that will pay for itself without having to wait 100,000 miles would be an efan. A relatively inexpensive part (especially if you go the pic 'n pull route) that not only yields a sold couple of MPGs gain, but also frees up a good amount of horsepower...
Veteran
Joined: Mar 2007
Posts: 281
Likes: 0
"That 17.9 better be highway. Even then, I've got the BS flag cocked in one arm, ready for throwing. With a 5.9 V8, thats hard to get.
If you state that's in town, DEFINITELY throwing a BS flag down."
Jasonw I really dont care about your bs flag In fact you have offered nothing positative to this thread..........good job at winning on the internet!
If you state that's in town, DEFINITELY throwing a BS flag down."
Jasonw I really dont care about your bs flag In fact you have offered nothing positative to this thread..........good job at winning on the internet!
Last edited by dnfd737; Aug 8, 2010 at 04:00 PM.
Administrator
Joined: Jul 2007
Posts: 24,686
Likes: 21
From: South Georgia/East Florida
That would have been pertinent information in your first post in this thread!
NO CAI will yield 5 mpg IF replacing a stock intake IN PROPER WORKING CONDITION!
Now given the state of neglect your stock setup was obviously in, this becomes plausible.
I think Jason was spot-on in flagging your original post. It's completely irresponsible to omit information and lead someone into believing that shelling out $300 for a mod would yield a 5 mpg gain as opposed to the .5-1 mpg it actually yields!!!
Veteran
Joined: Dec 2009
Posts: 357
Likes: 0
From: newfoundland
Neglect? what ever you miss the point all together. He has offered nothing to the conversation, just another keyboard comando. Dont just come out and say some one is full of **** add some thing then call some one out!
Yes I failed to mention that, my fault. And $300 try $59 shipped. Best quality? nope but with some foam pipe insulation it works very well. I have no idea how well the CAI works as compared to the stock setup with a clean filter. But I did get 5 mpg.
Also Please explain how a cooler motor gets more gas from an injected system. gas flows according to throttle position not tepm. If this were the case my mpg would be awsome in the summer. Fact is I get about .5 mpg better in the winter v/s the hot summer.
The 17.9 is highway at 60mpg, if I run 70-75 I drop down to 15 or so.
Yes I failed to mention that, my fault. And $300 try $59 shipped. Best quality? nope but with some foam pipe insulation it works very well. I have no idea how well the CAI works as compared to the stock setup with a clean filter. But I did get 5 mpg.
Also Please explain how a cooler motor gets more gas from an injected system. gas flows according to throttle position not tepm. If this were the case my mpg would be awsome in the summer. Fact is I get about .5 mpg better in the winter v/s the hot summer.
The 17.9 is highway at 60mpg, if I run 70-75 I drop down to 15 or so.