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Old 06-15-2005, 09:53 AM   #1
dfritz
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05 Baja turbo 5 spd

Default Tailgate down/ mpg improvement. Bed cover?

Some folks in another forum are reporting a 2 mpg improvement with the tailgate down. This seems logical, but the folks with bed covers don't seem to report similar gains. Maybe they're just not talking. How about it?

The improvement was on a 05 turbo. I haven't been able to try it out, I've been hauling some stuff and need the tailgate up, and I'm steady at 24 mpg.
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Old 06-15-2005, 03:38 PM   #2
10.5sec1992AWDtalon
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2 MPG sounds like wishful thinking, the bed is so short I don't think there is a lot of turbulance in there like a normal pickup truck.
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Old 06-15-2005, 04:38 PM   #3
TurboBaja
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There is a lot of turbulance in the bed. A few weeks ago after my hockey game, one of the guys dumped all the empty beercans in the back of my 'truck' to put a little red on my neck... I heard them banging around all the way home, unfortunately there were only 4 left in the bed after starting with 24. even the crushed cans were lifted out. I hate to be a litterbug, at least now I know better. Beercans never flew out of my '72 C-10 they just lined themselves up against the cab and rode along peacefully.
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Old 06-15-2005, 04:41 PM   #4
Calimoxo2
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Old 06-15-2005, 05:08 PM   #5
pgv
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I've never had anything fly out of the bed of my Baja. It is to the point the most times I don't even cover stuff anymore. In fact this week the bed got covered with little seed pods from the local ginko tree. They are very floaty, and unfortunately even at highway speed that didn't fly out. Maybe I just have a more aero Baja.

But, I will try running with the tail gate down to see what happens.
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Old 06-15-2005, 05:39 PM   #6
Hawk296
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http://www.popularmechanics.com/auto...tml?page=5&c=y

kinda cool info. It goes along with what ive been told some time ago.
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Old 06-15-2005, 11:27 PM   #7
dfritz
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The MPG improvement has been noted by several owners when driving with the tailgate down. I read both of the links, Cartalk and Popular Mechanics, and was relieved to see a cover helped out on pickups, which was my experience on my F150.

I don't have much trouble with things blowing out of the bed, and will get overconfident, only to watch some piece of junk floating away behind me.

I do keep a rubbermaid container near the tailgate, and it has to deflect a bit of air up. Most of my driving is rural, 45 to 55. I think the best test would be out on the highway.
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Old 06-16-2005, 05:13 PM   #8
cliffhanger
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haha i knew it and now i can sound smart when i tell people! i did this experiment with my baja and found the same thing true, and was confused for a little while.... and everyone called me names now i can call them stupid!
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Old 06-16-2005, 05:18 PM   #9
jetfan2207
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get a cap. I have not seen many baja's with a cap, but the couple I have seen really looked nice, and on top of the aerodynamics, it's a lot safer to store stuff in the back.
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Old 06-17-2005, 12:42 PM   #10
04turbogurl
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Quote:
Originally Posted by TurboBaja
There is a lot of turbulance in the bed. A few weeks ago after my hockey game, one of the guys dumped all the empty beercans in the back of my 'truck' to put a little red on my neck... I heard them banging around all the way home, unfortunately there were only 4 left in the bed after starting with 24. even the crushed cans were lifted out. I hate to be a litterbug, at least now I know better. Beercans never flew out of my '72 C-10 they just lined themselves up against the cab and rode along peacefully.
I too have had stuff fly out of the bed of my Baja...And other times nothing moved! Cans fly out a lot..( I dunno why my friends think itís a trash can?! ) and sometimes after hauling wood I get pieces of bark that would fly out. Some times I can see stuff floating around and maybe it would fall out maybe not. I donít know why it happens sometimes and not other. And I drive the same all the time...fast.


~Kelly
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Old 06-26-2005, 10:16 PM   #11
sir_wagon
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Not the same type vehicle, but when I had my Wrangler I noticed improved acceleration at highway speeds with the rear window open. Gas mileage also seemed better, although I never drove through an entire gas tank with the rear window open to take exact MPG measurements.

As for objects falling off pick-up beds, I remember driving behind a Chevy truck that was shedding pieces of ceramic tiles.
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Old 07-02-2005, 10:10 AM   #12
Dan C
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Umm, i was wondering how you steadily got 24 mpg? I have gotten that, sometimes better, when i do alot of highway driving or a long trip, but around town im between 17.5 and 18. And thats when i drive judiciously.
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Old 07-02-2005, 11:38 AM   #13
dfritz
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Yes, a very steady 24 mpg. Last week I drove from western Colorado to Denver, Boulder and Greeley. I got the best mileage so far on that tank at 27 MPG, tailgate up. On the return, I had about 300 lbs more cargo, and the tailgate down. Got 26.

I think it is pretty good for crossing the continental divide, 3 passes and some city driving.



My only mods are a KN filter, and I took off the roof crossbars. I also removed a small piece of plastic located on the hood, which constricts the intake. I hope to install a turbo back exhaust soon and to make a bed cover. I hope to get to 30 MPG on the road, at which point I will be satisfied.

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