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Commercially produced aerodynamic pickup bed cap Brett Herndon is a genuine craftsman who has combined his skill in clay modeling with his knowledge of aerodynamics to produce a professional quality aerodynamic truck cap which will literally pay for itself in gas savings. It's unlike anything you've seen before: it can be used as a big hatchback, transformed into a conventional box cap, or have its top removed to make room for oversize loads. Brett is taking his handiwork into commercial production, and is a success story waiting to happen. By MetroMPG - 540 replies In forum: Aerodynamics

t vago's MPGuino workspace thread, continued Check out t vago's continuous enhancement of the multi-featured MPGuino fuel economy computer / gauge. By t vago - 166 replies In forum: OpenGauge / MPGuino FE computer

Tall tire test (taller gearing advantage offset by wider, heavier wheels/tires?) Taller tires mean reduced cruising RPM, which is good for fuel economy. But what if the taller wheels/tires are also wider (which increases aero drag) and heavier? SentraSE-R tested his Scion Xb to find the answer. By SentraSE-R - 97 replies In forum: EcoModding Central

"Short-shifting" a Jeep Patriot & Audi A4 CVT (forcing early "upshift") saves gas Does your car's automatic transmission have flappy paddles? What about a manual shift gate or shift buttons on the steering wheel? If so, you may be able to save fuel by wresting control from the computer over your upshifts. MetroMPG shares his experience in a Jeep and an Audi. By MetroMPG - 16 replies In forum: Hypermiling / EcoDriver's Ed

Project 100 (custom enclosed Honda C90 targets 100 mph vmax and 100 km/L FE) Forum member visionary is custom-building an enclosed motorcycle with the goal of achieving 100+ mpg at its cruising speed of 70 mph, from an engine displacement of 100 cc. By visionary - 385 replies In forum: Motorcycles / Scooters

PICS! Econo Car conversion to Kubota Diesel. 1997 Geo Metro, Kubota D1005 3 cylinder Planejob is making great progress on dieselizing his Metro. His goal: "I want something that seats 3, sounds like a tractor, gets great mileage, and looks insane (aero mods)." No doubt that's going to happen. By planejob - 238 replies In forum: EcoModding Central

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

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) 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? 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 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... 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'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?? 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 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 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 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

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 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) 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