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Designing a header for fuel economy (for a Metro G10 1.0L)   Designing a header for fuel economy (for a Metro G10 1.0L)
Daox walks through the steps on how to design a header to improve fuel economy for his Metro's G10 1.0L engine.
By Daox - 121 replies
In forum: EcoModding Central

Automotive Aerodynamics (video series)   Automotive Aerodynamics (video series)
Forum member and aero researcher graysgarage is producing info-rich, YouTube videos on a variety of automotive aerodynamic topics. They include clear explanations, plus lots of flow test footage and analysis. And he's taking suggestions for future episodes.
By graysgarage - 67 replies
In forum: Aerodynamics

2nd gen Honda Insight parallel portable plugin hybrid battery pack build thread   2nd gen Honda Insight parallel portable plugin hybrid battery pack build thread
RedDevil is adding a 2nd battery pack in parallel with the OEM hybrid battery pack for additional capacity and a boost in mpg.
By RedDevil - 73 replies
In forum: Hybrids

The Zing! (Custom-built prototype hybrid tadpole trike)   The Zing! (Custom-built prototype hybrid tadpole trike)
The intention is for the production version is to have a 7.2kWh lithium pack which will have a maximum electric-only range of ~70 miles or about 40 miles in everyday driving. Then the generator starts up and you can keep driving, similar to the Chevy Volt.
By NeilBlanchard - 177 replies
In forum: Hybrids

Another truck aero cap idea...   Another truck aero cap idea...
Follow the evolution of BamZipPow's aerodynamic cap for his 1998 Toyota T-100 pickup.
By BamZipPow - 368 replies
In forum: Aerodynamics

The AX Eco Project : 100 mpg target !   The AX Eco Project : 100 mpg target !
In the 90's, the super light CitroŽn AX diesel held a Guinness record as the most efficient production car available, capable of 65 mpg (US) at 56 mph (90 km/h). HypermilerAX's modifications have already improved this to 80 mpg (US) at 56 mph. Now he's aiming for 90 mpg to beat the 1994 "AX Eco" concept car, and is also eyeing a 100 mpg tank (2000 km).
By HypermilerAX - 130 replies
In forum: EcoModding Central

Orange4boy   Orange4boy's Rescue and Revival of a 2003 Prius
See how Orange4boy brings back his 2003 Prius from the dead with a "dreaded P3120 HV Transaxle failure code".
By orange4boy - 167 replies
In forum: Hybrids


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

Pre-heating the Prius Transaxle and Engine for better fuel economy   Pre-heating the Prius Transaxle and Engine for better fuel economy
Orange4boy experiments with pre-heating things on his 1st gen Prius.
By orange4boy - 70 replies
In forum: Hybrids

OG   OG's VX Build: HyperMile Driving with some JDM Styling
Member OG VX documents the ongoing restoration/ecomodding of his 1992 Honda Civic VX with tons of details and photos. Already averaging 54 mpg (US).
By OG VX - 471 replies
In forum: EcoModding Central

Front Air Dam ABA test results: 7.49% increase in MPG at 60 mph (2003 Honda Civic DX)   Front Air Dam ABA test results: 7.49% increase in MPG at 60 mph (2003 Honda Civic DX)
The addition of lawn edging air dam to this 2003 Civic DX shows very good results in testing: mileage jumps from 44.7 to 48 mpg in multiple 60 mph comparison runs. The downside: it scrapes a lot in normal driving. (Just like the very deep factory air dam on the Chevrolet Volt.)
By whatmaycome14 - 47 replies
In forum: Aerodynamics

Testing rolling resistance of the Various Tires of the Suzukiclone Fleet (RE92 wins)   Testing rolling resistance of the Various Tires of the Suzukiclone Fleet (RE92 wins)
By MetroMPG - 50 replies
In forum: EcoModding Central

Spotted: fully streamlined/aeromodded ~2005 Honda Civic sedan (Austin, TX)   Spotted: fully streamlined/aeromodded ~2005 Honda Civic sedan (Austin, TX)
Spotted in the wild in Austin, Texas: a 2005-ish Civic Sedan with the full DIY aero treatment, from custom front bumper, to wheel covers, skirting, Kammback treatment and more. Anybody know whose it is?
By MetroMPG - 57 replies
In forum: Aerodynamics

Double kilotank: 2,009.6 mi on one 35 gal tank (   Double kilotank: 2,009.6 mi on one 35 gal tank ('07 Dodge Ram 2500 quad cab)
Distance: 2,009.6 miles; Fuel used: 35.0 gallons; Actual measured mileage: 57.42 mpg. Diesel_Dave notes the additional modifications & techniques used to accomplish this feat in this thread.
By Diesel_Dave - 85 replies
In forum: Success Stories

Aeromodded Civic VX 72mpg (image heavy)   Aeromodded Civic VX 72mpg (image heavy)
Ecotex shares with us his father's modified Civic VX that gets very impressive mileage.
By ecoTex - 357 replies
In forum: EcoModding Central

Shift points: EPA testing of manual transmissions (why beating MT ratings is easier)   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 - 35 replies
In forum: Hypermiling / EcoDriver's Ed

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 - 45 replies
In forum: EcoModding Central

Freezing the Slushbox. Torque Converter on-demand lockup switch.   Freezing the Slushbox. Torque Converter on-demand lockup switch.
Forum member orange4boy documents how he took manual control over the automatic transmission in his Toyota Previa van to force the torque converter to lock at will in any gear. (Note: requires an attentive driver to prevent potential damage). This modification gave him the largest increase in fuel economy of all his mods to date.
By orange4boy - 269 replies
In forum: EcoModding Central

Boat tail - Redneck style...   Boat tail - Redneck style...
Redneck builds a boat tail for his Geo Metro out of EMT tubing, skinned in 1/2 inch thick foam insulation board. Initial results show a ~15% improvement in real world highway MPG.
By redneck - 172 replies
In forum: Aerodynamics

Project Extended Pop-Top Aerodynamic Camper Shell (   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 - 344 replies
In forum: Aerodynamics





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