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Replace your car battery with capacitors! A good discussion on replacing a starting battery with ultra capacitors in cars, trucks, and motorcycles. By redneck - 390 replies In forum: EcoModding Central

1st Gen Toyota Tundra Aeroshell Build Macskyver chronicles the building of his beautiful wooden aeroshell for his Toyota Tundra. By Macskyver - 205 replies In forum: Aerodynamics

Old square sedan kammback Joris documents the construction and testing of a nicely made aluminum-skinned Kammback on his (very squared off) notchback Euro Volvo sedan. The addition is cleverly attached at the drip rails and hinged to preserve access to the factory trunk/boot. By Joris - 82 replies In forum: Aerodynamics

Got 2.25 L/100 km 104.36 mpg (US) at 80 km/h avg speed Vekke's modified Volkswagen Lupo 3L is getting closer to his 2L / 100 km goal (118 mpg US) at 100 km/h (62 mph) average speed. The car currently has a number of major aerodynamic modifications - one of which is just 80 mm of ground clearance - and more are planned. By Vekke - 19 replies In forum: Success Stories

Honda Insight Tail Extension Project What happens when you start with one of the most aerodynamic production cars ever sold and add a custom-crafted tail to make it even more efficient? Initial testing showed an improvement in fuel economy of 10.3% at 56 mph, or tentatively around an 18% reduction in aero drag. With this tail and other aero modifications in place, the car is regularly returning 100+ MPG tanks in every day use in warm weather. By 3-Wheeler - 540 replies In forum: Aerodynamics

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 - 291 replies In forum: Hybrids

Shift points: EPA testing of manual transmissions (why beating MT ratings is easier) Find out why it is easier to beat manual transmission EPA ratings than automatic transmission EPA ratings. By MetroMPG - 45 replies In forum: Hypermiling / EcoDriver's Ed

Aerocivic - how to drop your Cd from 0.31 to 0.17 The first of its kind, the Aerocivic. This car has been pumping out hybrid smashing mileage for years now. VERY impressive build. By basjoos - 802 replies In forum: Aerodynamics

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 - 702 replies In forum: EcoModding Central

Echo-Troll Modding Thread (2005 Toyota Echo) Follow the progress of an extensive aeromodding project on a 2005 Toyota Echo 1.5L , 5-speed. EPA : 30 City \ 38 HWY \ 33 Combined MPG (US). Modified MPG: 60 to 75 MPG in a 4.3 mile commute \ 60 to 67 mpg on the highway. By echo-francis - 331 replies In forum: EcoModding Central

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 - 183 replies In forum: Aerodynamics

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 - 119 replies In forum: EcoModding Central

My Ford Ranger - Project Log Nathan01xl is currently averaging around 38 MPG (US) in his 2001 Ford Ranger following numerous changes including the addition of a digital MPG gauge, improved driving technique, and a growing list of efficiency modifications. By nathan01xl - 148 replies In forum: EcoModding Central

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 - 78 replies In forum: Hypermiling / EcoDriver's Ed

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 - 298 replies In forum: Aerodynamics

Project Extended Pop-Top Aerodynamic Camper Shell ('99 Tacoma) The design criteria for this fiberglass-over-foam project: extended to the end of the lowered tailgate for maximum room (and further reduced aero wake); enough room in the "up" position for a raised floor to store gear beneath while still having room to sit up and move around comfortably; simple and convenient to use. By a8ksh4 - 345 replies In forum: Aerodynamics

Review: driving a $9998 2015 Nissan Micra (Nissan's most efficient manual in Can/US.) MetroMPG gets a Nissan Micra to review for a week. By MetroMPG - 84 replies In forum: General Efficiency Discussion

Another truck aero cap idea... Follow the evolution of BamZipPow's aerodynamic cap for his 1998 Toyota T-100 pickup. By BamZipPow - 392 replies In forum: Aerodynamics

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 - 1081 replies In forum: Aerodynamics

Experiment: coast down distances (rolling resistance) @ various tire pressures Increased air pressure reduces a tire's rolling resistance - but is more pressure always better? Coast-down distances are measured for three different kinds of tires, with pressures ranging from 20 through 70 psi. By MetroMPG - 116 replies In forum: EcoModding Central