A 27 gallon tank at 21MPG? hmm, lets see 21x27=567
480/21=17.777777. Have you ever run your truck dry before??? I would like to see a 04+ 5.4 F-150 get 550+ on a single tank. Im not saying BS but damn bro where do you get your gas???

 

I only run super. Any gas, but I prefer Chevron. And I run full sythetics in the entire truck.

 

Alright, why can't I post any pics? I am almost done modding out the exterior and want to post it for you guys. What gives?

 

I think you have to have been a member on here for a certain amount of time (30 days, maybe?) before you can post pics. May be wrong but that's what I seem to remember.

 

Well, if thats the rule. I guess I will get to finish everything on it then...Thanks

 

Yeah, just wait it out I guess.. that list of mods sounds impressive!

I do have to ask though.. 38% tint to your windshield? Are there no laws in AZ about tinting the windows?

I know Arizona is pretty good about personal rights, but damn! Do you even need a reflective shade thing when ya park it?! LOL

 

Nothing on your windshield is legal! My windshield is, uh, not politically correct I like to say. If you know what I mean.

 

You can upload your pics to someplace like Photobucket and post links.

 

if your timing IS NOT advanced - you will not gain any performance running super, unless maybe you had a massive amount of carnon on the cylinder head raising your compression-phil

 

If it has a knock sensor, you will gain both performance and gas mileage running premium fuel - as the timing will be more advanced. However, do the math - you may actually be paying more for gas per mile due to the price difference between regular and premium.

 

Electric fans, intake kit and pully kit are on there way. Hopefully it should get even better mileage! If I can keep my foot out of it...lol

 

I thought that a knock sensor retarded the ignition timing when it detected detonation, since engines typically have a tendency to knock when spark advance is increased.

In other words, I don't think it would advance timing for a higher octane. Besides, doesn't higher octane help cure knocking, not cause it? Maybe I'm wrong.

I do know that it won't be efficiently burned though, and he should stick with the gas that the truck is tuned for.

 

I believe you are correct. .

 

Yes, a knock sensor retards when it detects detonation - and the lower the octane, the less advance it can handle before it detonates. The more advance, the more power and better economy.

I had a 2.8 V6 Beretta with a 5 speed - on 87 it got 29 mpg on the highway and on 93 it got 32. It also had noticeably more punch on 93.