Tonneau cover = +2 MPG !!!
02-20-2006, 01:57 PM
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Tonneau cover = +2 MPG !!!
I recently added an Undercover tonneau. I haven't run through a tankful yet to do the hand calculations, but the dreamometer (overhead console) has jumped to 16.5 when it never broke 15 before. When it read ~14.5 I was actually getting 16.25 hand calculated, so I may be getting around 18 now. Not bad for < 2000 miles on the engine, cold weather, and anti-gel winter diesel.
Add the crankshaft sensor and summer temps and I might hit 20 MPG in mixed driving!
Add the crankshaft sensor and summer temps and I might hit 20 MPG in mixed driving!
02-20-2006, 03:41 PM
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It's what I consider to be the best tonneau cover on the market. Their website is:
http://www.undercoverinfo.com
I did a large amount of research, looked at sliding vs. folding vs. one-piece, etc. The Undercover is the best overall IMHO, AND costs less than many others (I paid $650). Installation was a breeze and it comes off in about one minute, less if you have a helper. Highly recommended.
The added MPG was a nice bonus, but is obviously not exclusive to this particular brand. Anything that prevents your bed from acting like a drag chute should give you the same results.
http://www.undercoverinfo.com
I did a large amount of research, looked at sliding vs. folding vs. one-piece, etc. The Undercover is the best overall IMHO, AND costs less than many others (I paid $650). Installation was a breeze and it comes off in about one minute, less if you have a helper. Highly recommended.
The added MPG was a nice bonus, but is obviously not exclusive to this particular brand. Anything that prevents your bed from acting like a drag chute should give you the same results.
02-20-2006, 08:32 PM
#5
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Originally Posted by WACTD
I recently added an Undercover tonneau. I haven't run through a tankful yet to do the hand calculations, but the dreamometer (overhead console) has jumped to 16.5 when it never broke 15 before. When it read ~14.5 I was actually getting 16.25 hand calculated, so I may be getting around 18 now. Not bad for < 2000 miles on the engine, cold weather, and anti-gel winter diesel.
Add the crankshaft sensor and summer temps and I might hit 20 MPG in mixed driving!
Add the crankshaft sensor and summer temps and I might hit 20 MPG in mixed driving!
Cheers
Mike
###
02-20-2006, 08:34 PM
#6
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Originally Posted by WACTD
I recently added an Undercover tonneau. I haven't run through a tankful yet to do the hand calculations, but the dreamometer (overhead console) has jumped to 16.5 when it never broke 15 before. When it read ~14.5 I was actually getting 16.25 hand calculated, so I may be getting around 18 now. Not bad for < 2000 miles on the engine, cold weather, and anti-gel winter diesel.
Add the crankshaft sensor and summer temps and I might hit 20 MPG in mixed driving!
Add the crankshaft sensor and summer temps and I might hit 20 MPG in mixed driving!
Cheers
Mike
###
02-20-2006, 10:09 PM
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Could be break-in related, but it happened instantly. Break-in is a gradual thing, so I believe the cover and reduced drag have something to do with it.
Either way, I'll take the increased MPG no matter what the reason!
Either way, I'll take the increased MPG no matter what the reason!
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02-21-2006, 08:22 AM
#9
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I will stick with my ARE, I keep about $20,000 in fishing gear when I am headed offshore and $5k in hunting stuff when its the season in there and prefer the HARD/heavy duty locking cover. I really didnt check too much on the MPG but am sure it is better with it. I put it on with about 15 miles on the truck.
02-21-2006, 08:42 AM
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I agree with Argo. The lockable (and invisible) storage space is important. I keep my whitewater kayaking equipment back there in the spring and summer, for example. That wouldn't work very well without a tailgate....
02-21-2006, 09:28 AM
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I added one to my truck (fiberglass) the day I bought it, three days later I drove across country from WA to VA via the southern route. I don't believe I saw much change in mpg. Not to say it can't happen, but I did'nt see any. 37k later the only noticeable change came from break in and adding my quad box.
