tailgate on or off help or hurt MPG - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 25 (permalink) Old 10-24-2010, 05:55 AM Thread Starter
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tailgate on or off help or hurt MPG

haven a tailgate on or off help or hurt the MPG its a 01 ccsb 4x4 7.3 auto just checking and im leaving georgia tomorrow to head back to tennessee any ideals for better mpg i got a stoack filter no tune on it at the moment and straight piped i got anywhere from 20-24 on the trip down here

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post #2 of 25 (permalink) Old 10-24-2010, 06:27 AM
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Re: tailgate on or off help or hurt MPG

Keep it up and on... The tailgate creates a pocket of air within the bed of the truck and does some science stuff and helps with some more science stuff. but in the end you will get better MPG with it up and on.
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post #3 of 25 (permalink) Old 10-24-2010, 06:30 AM
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Re: tailgate on or off help or hurt MPG

“When the tailgate is raised, a “separated bubble” of stagnant air is formed in the bed of the pickup. Wind tends to swoosh over this bubble as though it were part of the truck. Lower the tailgate, and the bubble disappears, which leads to increased wind resistance.”

did some research on the the science stuff
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post #4 of 25 (permalink) Old 10-24-2010, 06:36 AM
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Re: tailgate on or off help or hurt MPG

myth busters did a segment on this and found that you get better mpg with the tail gate up. The bubble that was talked about is the same reason why an empty can will circulate in the bed without blowing out.
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post #5 of 25 (permalink) Old 10-24-2010, 07:14 AM
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Re: tailgate on or off help or hurt MPG

Quote:
Originally Posted by StrokerSmoker01 View Post
i got a stock filter no tune on it at the moment and straight piped i got anywhere from 20-24 on the trip down here


Were you driving 55 downhill the entire time?

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post #6 of 25 (permalink) Old 10-24-2010, 07:48 AM
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Re: tailgate on or off help or hurt MPG

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Originally Posted by dirtboy25 View Post
Were you driving 55 downhill the entire time?
I'm leaning toward someone believing that little trip computer.

I did learn that if you keep your foot out of it, and stay at or below 2000rpm, your mileage will do pretty well. But with the 3.73 axle I suspect you have, you won't be driving 80mph+. At that rpm, you'll be around 67-68mph.

The best I've ever gotten out of my truck was 18.5 mpg. That was with a 60 hp setting on my superchips programmer, 4"exhaust, and 6637 air filtre. Since, I've gone to a straight pipe, and the 80hp setting, but haven't driven on the big road long enough to bother checking mileage. Science makes me think it might be a little better now, as well it seems the gas needle appears to move a bit slower.

Another nonaligned spokesperson.

Good stuff, trucks bring it!

I don't care if my thread goes off topic, it's all BS anyway!!!
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post #7 of 25 (permalink) Old 10-24-2010, 08:38 AM
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Re: tailgate on or off help or hurt MPG

I think where I live with short drives and crap fuel I average anywhere from 8-14 MPG; mostly dirt roads, so always have the front hubs locked and use the 4x4 regularly
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post #8 of 25 (permalink) Old 10-24-2010, 06:20 PM Thread Starter
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Re: tailgate on or off help or hurt MPG

i was actually running anyhere from 72 up tp 82 traffic as good so there was no stops i running threw downtown about 3 in the morning so i could put it on cruise and and save fuel

05/6.0/ccsb/fx4/lariat/Egr delete/Sct/Airdog2 165 gph/Powermax/6.4 banjos/5 inch mbrp/120k/SOLD

96/f250/7.3/5spd/rclb/35s/ts by beans/330k/SOLD

01/3500/6spd/4x4/Fully built/Riding on 22.5s/313k
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post #9 of 25 (permalink) Old 10-24-2010, 08:29 PM
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Re: tailgate on or off help or hurt MPG

I get over 20 mpg when I get down south close to the capitol where all the good roads are(and they complain the most about bad roads...), but then the max speed I go is about 50-55 mph. Before that I get like 16-18ish if I manage to keep my foot out of it.

Mind I almost never tow anything, but when I do I can still manage to get somewhere around 14-16 ish mph. Considering I can only tow a max of about 7000 lbs, and haul somewhere around 3200 lbs. Probably gross out at 16-17000 lbs, but I don't think I've ever maxed it out legally yet.

One of them truckless bastards.
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post #10 of 25 (permalink) Old 10-25-2010, 06:20 PM Thread Starter
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Re: tailgate on or off help or hurt MPG

well i just got back from atlanta last night went 658 miles on like 26 gallons of diesel im happy ha but im running 235/85 tires straight pipe and thats it i was only running about 68-72 not to bad for a ccsb 4x4 auto

05/6.0/ccsb/fx4/lariat/Egr delete/Sct/Airdog2 165 gph/Powermax/6.4 banjos/5 inch mbrp/120k/SOLD

96/f250/7.3/5spd/rclb/35s/ts by beans/330k/SOLD

01/3500/6spd/4x4/Fully built/Riding on 22.5s/313k
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