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How to Winterize Your Car EcoModder Style   How to Winterize Your Car EcoModder Style
Check out our list of things to do to winterize your car. Add your own info and thoughts too!
By Daox - 45 replies
In forum: EcoModding Central

Speed vs. MPG charts (post   Speed vs. MPG charts (post 'em if you got 'em)
The speed at which you choose to drive has the biggest impact on your highway fuel consumption. This fact is nicely demonstrated by this collection of graphs showing the relationship of MPH to MPG in a variety of vehicles, from a 55 hp Geo Metro to a 505 hp Corvette, and many others in between.
By bluejoey - 178 replies
In forum: Hypermiling / EcoDriver's Ed

1946 Chevy Prius Truck   1946 Chevy Prius Truck
Watch how member Hoopie is integrating a 2001 Prius platform & drivetrain into a 1946 Chevy Truck, with the goal of making the changes invisible to the casual observer.
By Hoopie - 276 replies
In forum: Hybrids

Urba Centurion Update - (Kubota diesel, 100+ MPG in mixed driving - Fall 2012 on)   Urba Centurion Update - (Kubota diesel, 100+ MPG in mixed driving - Fall 2012 on)
Changzuki describes the progress of this diesel-powered custom car, with Triumph Spitfire manual transmission and rear differential. Top speed from the 850 cc Kubota is 65 mph, and it's returning 100+ MPG in mixed driving.
By changzuki - 694 replies
In forum: EcoModding Central

SuperGeek Pictures, what do you all think?   SuperGeek Pictures, what do you all think?
Check out this cool custom motorcycle reverse trike project. Hes getting over 70 mpg!
By Alien Vehicles - 60 replies
In forum: EcoModding Central

My 1991 Talon TSi Compound Turbo AWD   My 1991 Talon TSi Compound Turbo AWD
It would almost be easier to list what hasn't been done engine wise to this car. Suffice to say that he gets mid 40 mpg with an auto, and is pretty darn fast. Check out this extensive build here.
By pgfpro - 432 replies
In forum: EcoModding Central

Boat tail project based on a single wheel trailer...   Boat tail project based on a single wheel trailer...
BamZipPow's epic customization & refinement of a single-wheel, drag-reducing trailer used on his already extensively aero-modified 1998 Toyota T-100 pickup. "Mileage is averaging around 27mpg with the trailer," he says, which he estimates is about a 2 MPG improvement.
By BamZipPow - 1067 replies
In forum: Aerodynamics


How to properly test modifications (AKA: don   How to properly test modifications (AKA: don't believe every MPG claim you read)
Here on EcoModder we see a lot of claims made about the effectiveness (or lack of effectiveness) of specific modifications. It's an understatement to say not all claims are made equal. It all depends on how rigorous the test is.
By MetroMPG - 115 replies
In forum: EcoModding Central

Why no more lean burn??   Why no more lean burn??
If the Honda Insight, Civic VX and HX were so good at achieving high mileage with lean burn, why is it not in all current Hondas and other economy cars? This thread looks at reasons for its demise & possible return in new cars.
By Mad Adder - 130 replies
In forum: General Efficiency Discussion

3rd gen Prius aeromod thread   3rd gen Prius aeromod thread
Vman455 buys a 3rd gen Prius, and in typical ecomodder fashion doesn't take long to start modding it. Check out what he has done.
By Vman455 - 262 replies
In forum: Aerodynamics

Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L   Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L
The Micra's official ratings are almost the same for the automatic and manual transmission. Yet the 5-speed can be much more efficient in the real world using just one simple ecodriving technique. Again we see the EPA handicaps manual transmission cars due to dictated, non-eco shift points during testing.
By MetroMPG - 63 replies
In forum: Hypermiling / EcoDriver's Ed

VW Lupo 3L --> 2L   VW Lupo 3L --> 2L
Vekke has taken one of the world's most efficient cars and is modifying it extensively for even better results. "Best fuel consumption so far is 2.24 L/100km at 80 km/h average speed, which equals 105 MPG (US) at 50 MPH avg. speed."
By Vekke - 383 replies
In forum: EcoModding Central

Aerodynamic streamline template - online tool (view streamlined extension on any car)   Aerodynamic streamline template - online tool (view streamlined extension on any car)
Member seifrob made an online tool that overlays a streamlined template on an image of any vehicle to visualize the "ideal" extended low drag shape. Very useful for anyone considering building a drag-reducing Kamm back, full boat tail, box cavity, spoiler, etc.
By seifrob - 178 replies
In forum: Aerodynamics

Honda Insight Under-body Smoothing Panels (custom belly pan / undertray)   Honda Insight Under-body Smoothing Panels (custom belly pan / undertray)
This is an incredibly detailed effort to smooth out the underside of a first generation Honda Insight. After the modification, the owner says, "As for MPG, I seem to be getting about 7 MPG more than before. Average is about 81 MPG with 60 F temps, and this is over a full tank of gas."
By 3-Wheeler - 81 replies
In forum: Aerodynamics

15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed   15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
A collection of mosty small & inexpensive mods, from aerodynamic to electrical to gearing changes (through oversize tires) result in an average 15% mileage improvement in a 2007 Civic.
By MetroMPG - 47 replies
In forum: EcoModding Central

Dam, It works! (Air dam on Smart Fortwo: 3-4% MPG improvement)   Dam, It works! (Air dam on Smart Fortwo: 3-4% MPG improvement)
In addition to a clear lower grille block and smooth, black wheel covers, Chumly added and tested a simple air dam: "I just made an air dam out of some lawn edging. A-B-A testing shows 3.16% - 4.2% (avg 3.73%) better mileage. It took a whole half hour to make and install it, I should have done this a long time ago!"
By chumly - 50 replies
In forum: Success Stories

94 Caprice Wagon 5.7L project--46 MPG so far   94 Caprice Wagon 5.7L project--46 MPG so far
A huge boat of a vehicle modded to get some crazy good mileage.
By funkhoss - 75 replies
In forum: EcoModding Central

208 km (129 mi.) in EV mode with a 2007 prius plugin 20kWh   208 km (129 mi.) in EV mode with a 2007 prius plugin 20kWh
Planetaire shares his very nice 2nd gen Prius PHEV conversion.
By planetaire - 33 replies
In forum: Hybrids

1997 Civic CX to HX engine/VX trans swap! 63 MPG @ 62 MPH   1997 Civic CX to HX engine/VX trans swap! 63 MPG @ 62 MPH
When his 1997 Civic CX engine needed a lot of work, turbovr41991 decided to spend his repair time doing something different: he picked up a rusty Civic HX and swapped over the more efficient lean burn engine instead, and went with the more efficient gearing of the Civic VX. With a few other modifications in place, the car is returning seriously impressive highway fuel economy.
By turbovr41991 - 187 replies
In forum: EcoModding Central

2005 Prius engine into 1986 MR2: mk1 1nzfxe Prius swap (gas only)   2005 Prius engine into 1986 MR2: mk1 1nzfxe Prius swap (gas only)
Mr220v informs us that used Prius engines are dirt cheap, and therefore fun to experiment with! He swapped one into an MR2, and using the Prius variable cam timing/Atkinson design, he now has variable compression on demand, via a push-button. He's still working out tuning, but fuel economy has gone up a healthy amount, from ~30 to 37 mpg (US).
By mr220v - 114 replies
In forum: Success Stories





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