better mpg for a 5.4
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Depends where your pockets are.. Some are confident in the mark VIII fans and claims are that they flow better than almost all aftermarket fans....which you can pick up at a junk yard for around $40. But they need a proper controller to run them. Most are using dc controllers I believe because that fan has such a high current draw. There are lots of topics on them. That is my plan, mark VIII fan and DC controller when I get the time. Most will tell you that is your best upgrade, fuel mileage, throttle response and a hp gain you can feel. BTW, I have the same truck.. 99 5.4L w/ 3:73's running 33x12.5x17's and seeing around 14-15mpg right now. Hoping for 16 with the E fans. I have been running the gotts mod on both this and my last truck, good improvement for the $6 it costs to put it together.
Last edited by Toyz; 10-27-2011 at 12:36 AM.
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Seriously though...I don't mean to be negative about the subject, you just need to be realistic about what you're doing. Don't do mods simply for fuel mileage, period! Why?? You'll never get a return on your investment. The cost of the mods are so significant in relation to any measly fuel savings you'll see that you'll never break even financially. So, do the mods because you like modding your truck. If all you're after is fuel "savings", from a financial standpoint you're better off doing nothing and concentrating on what was said about driving habits, tire psi, and things of that nature.
#7
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#8
Regular maintenance is about the best thing you could do. An exhaust and e fans netted me about 3 mpg gain at best. That is offset by aging parts so the gains often aren't noticed. These trucks despite age do pretty good mileage on the highways, anything else, nope! These guys^ are right! I did notice gains with a tuned chip, but had to yank it. Running premium gas hurt the wallet but seemed to keep the engine clean, so.....
Last edited by BLUE20004X4; 10-27-2011 at 10:38 AM.
#9
You even helped me make my point. Any mileage increase you may have seen was negated by the premium requirement. Heck, yours isn't even a wash...you went in the hole But, you didn't do it for that reason
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Efans
Tune
Intake
exhaust
Gears
Lighter/smaller tires
New spark plugs might help if old ones are bad
O2 sensors should be replaced at 100,000 miles
Keep up on fuel and air filters
monitor your tire pressure, too much will wear out your tires sooner, too little will hurt mileage
Pretty much most mods will help mpg slightly. And of course maintenance will help too, the biggest gain I saw was from replacing my O2 sensors. Look up how to check tire pressure with chalk for the proper way to get the perfect PSI for your tires.
Tune
Intake
exhaust
Gears
Lighter/smaller tires
New spark plugs might help if old ones are bad
O2 sensors should be replaced at 100,000 miles
Keep up on fuel and air filters
monitor your tire pressure, too much will wear out your tires sooner, too little will hurt mileage
Pretty much most mods will help mpg slightly. And of course maintenance will help too, the biggest gain I saw was from replacing my O2 sensors. Look up how to check tire pressure with chalk for the proper way to get the perfect PSI for your tires.
#13
06yz250f, thats it im selling everything to get one!
azmidget91, what kind of exhaust? larger than stock, headers, high flow cats and muffler, intake and tuner types? thats the kind of info im looking for, I know im not going to gain much but everything helps and im curious about the combinations you guys have.
azmidget91, what kind of exhaust? larger than stock, headers, high flow cats and muffler, intake and tuner types? thats the kind of info im looking for, I know im not going to gain much but everything helps and im curious about the combinations you guys have.
#14
06yz250f, thats it im selling everything to get one!
azmidget91, what kind of exhaust? larger than stock, headers, high flow cats and muffler, intake and tuner types? thats the kind of info im looking for, I know im not going to gain much but everything helps and im curious about the combinations you guys have.
azmidget91, what kind of exhaust? larger than stock, headers, high flow cats and muffler, intake and tuner types? thats the kind of info im looking for, I know im not going to gain much but everything helps and im curious about the combinations you guys have.
Last edited by Toyz; 10-27-2011 at 11:08 PM.