PDA

View Full Version : Getting pissed about mpg in 5.0



Big Slick
04-24-2013, 12:32 PM
Okay, I am starting to get pissed about my mpg in my '11 5.0 s-crew 4x4. I keep reading how people are getting 15mpg city. I'm steadily dropping and currently at 12.6.

I put in a K&N intake
I drive 90% city and my commutes are between 10-15 minutes long to and from work.
My tire pressure is at 37lbs on all 4.
I use regular gas
I drive under the speed limit more often than over.
I accelerate slowly and coast often.
I have not tried any fuel injector cleaner but was going to pick up a bottle for my next fill up.
I have a tonneau cover covering the bed

What the hell is going on? Why am I getting such crap mpg? What else should I do/check?

Jersey_Joe
04-24-2013, 01:04 PM
I've always burned 89 or better and I use zmax every 6,000 miles. Give it a **** and see how u do bud

----------

I wrote shot. Guess it spell checked ish. Lol

baldyman
04-24-2013, 01:51 PM
your k&n might actually be part of the problem too. I believe it was Rhino that made a point on here saying that city driving and a k&n don't mix well. this is because when you're driving city the k&n is effectively sucking hot air from under your hood into the throttle.

unless of course you have a closed-box k&n lol

BFEB
04-24-2013, 02:17 PM
Aside from driving style I'm not sure what the difference is. I'm sitting at 14.4 on mine and all but 50 of the 500 miles I have are all city.
You might try letting the truck do its thing and just set the cruise on any long straights you have. I set my cruise right at the speed limit everywhere I go.
I also don't think the K&N is the issue. My Airaid is open and not that I have something to compare it to, but I really think there is no difference in MPG with or without it for my commute which is about 10 min.

----------

Another thought is have you reset the MPG meter? Maybe try taking a 25-30 mile trip down the highway and see how she does with that.

----------

Another thing you may try is putting the LCD in the mode that shows all the software info. That area has a lifetime mpg meter

To get into that mode put in your key, hold the OK in the middle of the d-pad, then turn the key to on without starting the truck, wait for the built Ford tough screen to go away then start her on up. Just press the OK button to change what is displayed and hold OK to get back to the typical mode.

RhinoZ24
04-24-2013, 11:24 PM
Also try calculating your MPG's yourself, computers are off a little. Clean the throttle body, use the ZMax Joe said, it's expensive but it'll clean your engine pretty well, and the tonneau cover has been said to actually reduce instead of increase mpg. But I've heard mixed results about that.

BFEB
04-25-2013, 06:08 AM
U still stuck on that tonneau hurting mileage kick? Lol
I can tell you first hand that I gained 0.5 - 1.0 mpg hwy when I put mine on the EB. No difference in city mileage to speak if with it, but it really doesn't get a chance to do its thing in stop n go

RhinoZ24
04-25-2013, 07:19 AM
Like I said, I've heard mixed results.

iH8chevy
04-25-2013, 10:48 PM
I use 91 chevron and get about 340 360 in city with my 5.4l aftermarket tires no lift

----------

Over 400 highway too k&n flow master oh flex fuel too !!!f150 2010!

Raptor05121
04-26-2013, 04:07 PM
OP, I would take off the K&N and do a controlled run with it and one without it. I cannot imagine an intake would make much of a difference, but it wouldn't hurt to check and see.

Secondly, how many miles do you have on your truck? Is it past break-in? The first 5,000 miles you should be varying the engine speed and break in the piston rings. The engine also helps by holding open loop for longer and running its stoichiometry at a higher percentage (thus lower mileage) until it is properly broken it.

Don't bother with any fuel injector cleaner. You'll risk ruining something more than it will helping. Shell and BP gasoline have been proven to keep an engine cleaner than one with cheap fuel and fuel detergents.


Also try calculating your MPG's yourself, computers are off a little. Clean the throttle body, use the ZMax Joe said, it's expensive but it'll clean your engine pretty well, and the tonneau cover has been said to actually reduce instead of increase mpg. But I've heard mixed results about that.

New engines have a coating on the inside of the throttle body and intake manifold, so it is advised to take it to the dealer and have them use their BG vacuum system to safety remove contaminates. BUT, given the fact his truck is too new to accumulate any carbon buildup, I would give it at least a year or two before you worry about it.


I use 91 chevron and get about 340 360 in city with my 5.4l aftermarket tires no lift

----------

Over 400 highway too k&n flow master oh flex fuel too !!!f150 2010!

Why are you using 91 octane? Your truck calls for 87....

RhinoZ24
04-26-2013, 04:45 PM
OP, I would take off the K&N and do a controlled run with it and one without it. I cannot imagine an intake would make much of a difference, but it wouldn't hurt to check and see.

Secondly, how many miles do you have on your truck? Is it past break-in? The first 5,000 miles you should be varying the engine speed and break in the piston rings. The engine also helps by holding open loop for longer and running its stoichiometry at a higher percentage (thus lower mileage) until it is properly broken it.

Don't bother with any fuel injector cleaner. You'll risk ruining something more than it will helping. Shell and BP gasoline have been proven to keep an engine cleaner than one with cheap fuel and fuel detergents.

New engines have a coating on the inside of the throttle body and intake manifold, so it is advised to take it to the dealer and have them use their BG vacuum system to safety remove contaminates. BUT, given the fact his truck is too new to accumulate any carbon buildup, I would give it at least a year or two before you worry about it.

Why are you using 91 octane? Your truck calls for 87....

His truck is a 2011 and he bought it used lol. That's why I said try cleaning those and using the fuel system cleaner. His engine is definitely past break-in lol. I was, however, unaware of the coating on the tb and intake manifold.

Raptor05121
04-26-2013, 07:33 PM
If it were my truck, the only thing I'd put down the fuel tank is BP and Shell 87 octane gasoline.

lumaro443
08-28-2013, 11:51 AM
I also have 2011 screw 5.0. I understand why you would be pissed, I'm getting closer to 20 mpg stock. Maybe that's the problem. I've read that the 2011 and up changed some things to improve mileage without losing power. If you have k&n oiled filter you may have oil and dirt on your maf sensor.

RhinoZ24
08-28-2013, 01:07 PM
I also have 2011 screw 5.0. I understand why you would be pissed, I'm getting closer to 20 mpg stock. Maybe that's the problem. I've read that the 2011 and up changed some things to improve mileage without losing power. If you have k&n oiled filter you may have oil and dirt on your maf sensor.

Just pointing out that 2011 was the first year for the new engines lol.

Bullet Tooth Tony
06-17-2015, 06:33 AM
I do part city and highway driving and the pick below shows what I'm getting in my 14 with the 50

http://images.tapatalk-cdn.com/15/06/17/65ed0fc19dd233c3f88ffee2c0c22646.jpg

I looking to CAI for mine, but I would like to find a RAK so I'm not pull heat in from the engine compartment.

----------


I do part city and highway driving and the pick below shows what I'm getting in my 14 with the 50

http://images.tapatalk-cdn.com/15/06/17/65ed0fc19dd233c3f88ffee2c0c22646.jpg

I looking to CAI for mine, but I would like to find a RAK so I'm not pull heat in from the engine compartment.
Sorry for the lop sided photo

Jersey_Joe
06-17-2015, 09:28 AM
9414

I run 93 most of the time. City I get about 18/19

5Star tuned.....

Jersey_Joe
06-17-2015, 09:28 AM
9415

5Star tuned.....

Jersey_Joe
06-17-2015, 09:42 AM
I also have 2011 screw 5.0. I understand why you would be pissed, I'm getting closer to 20 mpg stock. Maybe that's the problem. I've read that the 2011 and up changed some things to improve mileage without losing power. If you have k&n oiled filter you may have oil and dirt on your maf sensor.
Yeah. Engines lol

5Star tuned.....

----------

If I did the speed limit. I'd prob get 30 mpg lol

5Star tuned.....

RhinoZ24
06-17-2015, 01:45 PM
Yeah. Engines lol

5Star tuned.....

----------

If I did the speed limit. I'd prob get 30 mpg lol

5Star tuned.....

See more power means more mileage! Lol jk if only that was always true.

Jersey_Joe
06-17-2015, 02:28 PM
Being more efficient burns fuel better. I just build em. 5star tunes em.

5Star tuned.....

cooperf150-06
06-17-2015, 08:18 PM
Just now starting to see 18.6 just driving around town and to work, been close to 22 when going on a few trips. I take that over what my 06 ever did

RhinoZ24
06-18-2015, 12:40 AM
Just now starting to see 18.6 just driving around town and to work, been close to 22 when going on a few trips. I take that over what my 06 ever did

Haha yeah the most I've seen out of my 4.6 is 18.something. Haven't done a long road trip with my tonneau cover yet to see if it helps any.

cooperf150-06
06-18-2015, 07:15 PM
Haha yeah the most I've seen out of my 4.6 is 18.something. Haven't done a long road trip with my tonneau cover yet to see if it helps any.

My 06 maybe 12 if I was lucky but it was due for plugs so who knows

Ford Fan#1
06-22-2015, 01:54 PM
The instant mileage on my moms rental truck says 17 mpg.. And it has a misfire right after overdrive.

5star
06-25-2015, 10:50 AM
I average 16.2 in mine. Mostly city driving, 4x4, 3.55 gears, 34's, heavy foot and our 93 race tune!

Jersey_Joe
06-25-2015, 02:26 PM
If I run that tune I get 9-12. But when u wot. U know why lol

5Star tuned.....

cooperf150-06
06-25-2015, 02:58 PM
U know us guys with the stock tunes we run 18 lol

BFEB
06-25-2015, 03:38 PM
U know us guys with the stock tunes we run 18 lol I feel like this is one of those "you gotta pay to play" situations

cooperf150-06
06-25-2015, 03:47 PM
I feel like this is one of those "you gotta pay to play" situations

Yep I believe u r right

Jersey_Joe
06-25-2015, 05:11 PM
U know us guys with the stock tunes we run 18 lol
Sure is fun when u hit it when it's tuned.

5Star tuned.....

cooperf150-06
06-25-2015, 06:51 PM
Sure is fun when u hit it when it's tuned. 5Star tuned.....

Finger lol

Jersey_Joe
06-25-2015, 07:57 PM
Hmmmm. Somebody showed me this n|m
Means finger lol. In this case. Finger back lol

5Star tuned.....

Ford Fan#1
06-25-2015, 08:12 PM
Hmmmm. Somebody showed me this n|m Means finger lol. In this case. Finger back lol 5Star tuned..... n
n||m I'm just going to leave this here for you to use lmao although if you would use an n instead of m on the right it might look like something else.....

BFEB
06-26-2015, 06:02 AM
Hmmmm. Somebody showed me this n|m Means finger lol. In this case. Finger back lol 5Star tuned..... You're learning so well young Jedi lmao

Jersey_Joe
06-26-2015, 10:36 AM
Hahaha

5Star tuned.....

----------

I knew u would like that lol

5Star tuned.....

Ford Guy
06-27-2015, 07:05 AM
I agree the K&N ruined the gas millage in my truck. Removed it and got 5 more mpg. Do know why .

Jersey_Joe
06-27-2015, 11:55 AM
Lol. In resent months my thoughts on k&n have gone down considerably. If ur poppin one or two in for a "race" night. I think there great. There also expensive to do that. Lol.

9439

Try this. It's an s & b. It's a little larger than stock. And also doesn't make that god awful suck noise. And guess what else? U cant hear it in the cab!!! It's about the same as the competition. It works. And will give u a 2-3 mpg increase "if" u drive it accordingly. Easy right foot. Better milage. But who does that?!? lol. It works. Ive seen it. Researched it. And have seen it on a dyno. There are plenty of videos online. Hope that helps u.

5Star tuned.....

Jersey_Joe
06-27-2015, 12:06 PM
I agree the K&N ruined the gas millage in my truck. Removed it and got 5 more mpg. Do know why .
I also think they come with too much oil. If u read the restore instructions. It states to not over spray. The last 3 I've purchased were dripping slightly. And made a stain on the box. I think it blocks air. That's my opinion only. Hope I answered ur question

5Star tuned.....

----------

Custom Dynomemeter Chassis Tuning Products and Services - 5 Star Tuning (http://Www.5startuning.com) has em. And will give yall a discount when u tell me ur a member here.
Ask for Chris yall. Those people are awesome. Or not. Yall can use who u like fer sure. I'm just sayin. They take care of u like family and I'll always pass that ish on!

5Star tuned.....

cooperf150-06
06-27-2015, 12:54 PM
K&n was on my 06 to much noise and that oil was a bitch

Ford Fan#1
06-27-2015, 02:19 PM
K&n was on my 06 to much noise and that oil was a bitch I like mine but.. I don't really need it. I've figured that out since I've gotten one. Not sure if I should get paper ones and waist the K&N since it was $50

Jersey_Joe
06-27-2015, 02:55 PM
You mean your brothers

5Star tuned.....

Ford Fan#1
06-27-2015, 05:45 PM
You mean your brothers 5Star tuned..... that was when I actually got to drive it. I was the first one to drive it between him and me. ( my mom was with us beacause we both still had our permits )

5star
06-28-2015, 10:06 AM
I agree the K&N ruined the gas millage in my truck. Removed it and got 5 more mpg. Do know why .

Many intakes cause the trucks onboard computer to overcompensate and run towards the lean end of the spectrum without being returned. K&N tends to run slightly lean. Not as bad as most but without a tune can kill some mileage.

RhinoZ24
06-28-2015, 03:45 PM
Many intakes cause the trucks onboard computer to overcompensate and run towards the lean end of the spectrum without being returned. K&N tends to run slightly lean. Not as bad as most but without a tune can kill some mileage.

Exactly why intakes are pointless without either a custom tune or forced induction. These trucks come with "Cold" air intakes as they suck fresh air from the fender wall rather than the engine compartment which is what you get with a lot of "cold air intakes" with the open air boxes. Kinda defeats the purpose.

anaheim_drew
07-09-2015, 02:11 AM
Better mpg is not the purpose of aftermarket intakes.

----------

OEM tuning will not work with aftermarket forced induction.