MPG Drop

[PCT]

I have noticed a MPG drop. When i first bought the truck i was gettin 17-21 mpg hwy, once i added tires i noticed it drop to 15-18 which was expected. Went to 285-70-17. Now im getting 13-16 hwy. The only thing i can think that is messing it up is my grill guard maybe its causing the aerodynamics to be messed up, but didnt think it would drop it that much...

Let me know what yall think?

BTW its a 4.7 engine.

 

[drittal]

Winter fuel?

 

[PCT]

Maybe didnt think of that... Do they change it much in Cali?

 

[R.L.K.]

Winter fuel additives and heavier tires .

 

[GoldDot]

Hard to say, but stuck calipers/E brake could kill mileage.

 

[PCT]

Ahh, well that's good to know! If they were stuck I would assume they would smoke out


Sent from my iPad using Tapatalk

 

[scotts2012ram]

Check plugs mine drop like 3mpg put plugs in came right back up

 

[avantiguy]

Ahh, well that's good to know! If they were stuck I would assume they would smoke out


Sent from my iPad using Tapatalk

Not necessarily, after driving a few highway miles, feel the rims at the bolt holes. All should be about the same temp and relatively cool to the touch. If so, no brake drag.

 

[SilverStreak88]

Welcome to the "poor MPG" club.

 

[AustinB]

IMO

 

[xrsman]

I didn't notice a change in mpg with my 4.7L when I changed the plugs. I'd just say winter fuel man. My truck is taking a big hit too lol

 

[Saltillo Express]

winter fuel. I got 16 all summer long. Now I'm getting 14.2. And I ain't got no fancy vent system.

 

[PCT]

IMO

Dude thats it, what does that add like 4 mpg? and like 500 FTLB of downforce!!!
refer to the video if you wish to understand my downforce joke...
https://www.youtube.com/watch?v=mD7o-wVKO9Y

 

[sbarron]

even better combine the wing with...



EDIT: And don't forget to remove the tailgate and install the net.

 

[AustinB]

IMO

 

[Saltillo Express]

I can hear my transmission solenoids burning up just looking at that thing. the chip. not the wing. the wing is full ass ghetto. I love it.

 

[sbarron]

...after only 30-54 seconds? Time well spent.

 

[PCT]

I pulled one plug out at 45k miles and it looked ok, but i bet there original, so im going to do them my next oil change, maybe it will go up one or so, if there worn their worn, so cant hurt. I didnt even think about winter fuel, i thought it was my grill guard causing areo dynamic issues n ****... Probably what it is thanks guys! HAHA i should get hat chip, cheaper than DIABLO

Real talk i should probably diablo my truck, i heard these 4.7 wake the F*** up after the trinity tune

 

[PCT]

So on the freeway today, i was getting 17-20 mpg. My assumpsion is the ECU recognized my intake