- Replace the Prius: Corolla or Civic
- Fuel Efficient Vehicle with 3rd Row
- Interesting old article on the 1992 Civic VX
- Propane Fumigation on gas EFI cars
- Oil level resistance
- Throttle body diameter and air cleaner piping
- I bought a TDI!
- Exhaust direction (to fill in turbulence)
- 2021 Toyota Tacoma (3rd gen Tacoma) aka the money maker build
- Espace 3
- Tire performance vs economy?
- Filling up question
- 2003 ram
- Should I Buy This 1996 Geo Metro?
- Toyota Aygo Wideband O2 sensor retrofit & piggyback or OBD2
- California to start checking OBDII cars for tunes
- Climate control mods (that might be terrible).
- Modding a GMC Sierra 2500
- Idea for RV boat tail
- Would you guys repair a broken air-conditioning?
- Need to sell my ‘86 CRX HF
- David Vizard high mileage Mini project info/results
- Electric AC compressor?
- The Minnibago
- Highway Cruising
- Good Deal?
- 3rd time lucky! Bought yet ANOTHER cheap, 3-cyl Mirage eco-appliance!
- Aero-mods: 17 Kawasaki Versys X 300
- 2008 Kia Rio Moon hubcaps
- Saw a "Solar" EV on AliBaba - est. solar range?
- Thomas Rocket Car
- Economical tow vehicles
- Ecomodding my $800 Honda Fit 5-speed beater [was "Picking up my..."]
- Woodgas meetup 2021
- Mainstream Youtube Honda Insight Hypermiling
- What a mess ! ( Recycling EV batteries )
- Robert Q. Riley will be remembered.
- Anyone use CB radios in their cars?
- Post your art - PhotoChops / napkin doodles of cars and such here.
- Aerocivic - Restoration and further modding
- PHEV using Allison H 50 EP
- water/methanol injection's untapped FE potential
- Lean burn engine (E85?)
- Diesel high efficiency intercooler upgrade
- MPV12/HP Tuners for my GM V8 Van?
- What good and bad can you tell me about biodiesel ?
- Tire model, size and pressure
- EcoBoat? Ocean going diesel.
- Tire size vs MPG - EPA test results
- Bassjuicing a Volt in Photoshop
- Help mateing a US Gear Overdrive
- Extremely thirsty supermodel - eco attempt!
- leSharo RV
- New Buick Encore GX
- Prius ICE starts after only a few seconds - Gets only 41 MPG
- GM's newest pickup costs $9,000
- What tires do you have & how would you rate their RR, treadwear & traction?
- Dual over drives
- Tire Pressure Again
- Practicality of Mazda 3 BM active grille shutter retrofit (OEM)
- A-B-C-A tested spare tire aero mod to 2nd gen Highlander Hybrid
- tire size fuel efficency 165/60/r14 , 165/80/r14, 155/80r14
- 1G Insight - Eco Kswap
- LRR vs. Weight
- Mahle printed pistons for fuel mileage?
- Ozone injection
- Looking for eco friendly Hondata Kpro tuner
- Corolla diesel 1.8
- Tesla Model S breaks the 200 barrier, as well as getting close to breaking the .200 cD barrier
- Long term effects of pulse and glide in an automatic
- WMO/WVO/Used Trans/Hydraulic fluid to Black Diesel talk
- The glorious jiggly bags of joy
- $350 Metro?
- Lithium Titanate Battery
- Rake Back to save MPG
- Continuous EGR
- New Prius!
- HOW to add and control EGR to a Chevy SB
- Forester 6MT - Throw some ideas at me!
- A very real possibly answer to what we all want!!!
- 2011 Ford Ranger 4.0L with topper - ideas
- 2013 Nissan Frontier Crew Cab Ecomod Ideas Needed
- Engine management mods
- Next Vehicle?
- Auris Hybrid Tips and Tricks
- Insight with VW diesel swap for sale
- Big Diesel, MPG increase ideas?
- Accessory Drive Losses
- What are the signs of oil viscosity breakdown ?
- Eco modding the Jeep TJ to 5.5l/100 (42MPG)
- Lotus Elite Type 14 Replica?
- How about inviting some guests to the forum
- 2019 Mitsubishi Mirage G4 5-speed
- Flat tire repair vs weigth savings techiques
- Mercedes E220 1994
- Tire alignment
- Audi A2 1.4 petrol/LPG Gas
- Need advice on GoPro / GoPro alternative and suction cup mount for tuft testing
- Large Family Hauler Ideas? 35+ MPG Wanted
- Civic D15Z1 problems
- A much more efficient alternator
- My first XFi
- 59 Rambler engine
- Reason for old car pictures
- Thoughts on 1984 Ford Ranger 2.2 Diesel?
- Rear view problems
- Driving further
- Peugeot 108 more fuel efficient?
- Engine off instead of idling?
- caravan transfer gears
- Pictures of my projects ('67 Sunbeam, ecomodified '65 Mustang, hot rods)
- Engine flush one last time? Or no?
- 212cc engine swap gives a new life to an old Honda Insight.
- The best carb if not using FI.
- Common sense and MPG
- Article on oil cleanness and fuel use
- Michelin Crossclimate+
- Ford Ranger Hot T-Stat
- Spring rate, wheel well size, and lowering springs
- Oil alert
- Shonky Saab 9-5 2.0t Manual
- List of wheel weights
- When to buy tires
- New rims/ light weight or aero?
- 320touring - back in a bargain Citroen Berlingo
- VW E-up, Mii electric, Citigo E mods for efficiency
- Swap gears or swap engines?
- Flat tire kit instead of spare
- Thoughts/Opinions on best potential eco car <$2K
- Cheap full synthetic oil at Costco
- Chevy prizm/ Corolla for mpg monster?
- /// best tires smaller lrr tires or larger regular tires ? ///
- Throttle-limited testing methods (Constant Throttle)
- How's this for some tall gearing?
- Wheel thickness: 14x4.5 or 13x5?
- Come back, Frank Lee!
- Rear end swap revisited
- 1993 Mercedes w124 diesel modifications
- Curtis controller model 1208-2455
- Bellypan/Undertray as rust preventative?
- Changing to a different tire size
- Awesome results with a 2018 Yaris IA ( 50.7mpg lifetime mpg )
- Restore Engine Restorer
- Jeep transfer case swap - preliminary fe data
- Oops, I did it again! Bought another cheap, 3-cylinder Mirage. Mods in progress...
- What should I do with a 2002 Prius?
- First gen Civic (1975) 1.5l 4spd CVCC
- Sealing gaps around radiator
- Best 5 x 114.3 Wheels
- OEM MPFI vs modern TBI conversions
- Eco off-road on a budget? Or destroying a Prius, you decide.
- Good dyno tests of modifications (video & screenshots)
- CVT swap? (Into 2005 Civic, replacing 4-spd auto)
- 87 Octane Ethanol Free or 90 Octane Ethanol Free??
- Areodynamic parts - which ones are worth having?
- Trying out 0w-16 oil for more MPG
- Completely unexpected MPG results
- Help troubleshooting converted car system :)
- The real cost of ownership. Tesla Model 3.
- What RPM range do YOU get the best mileage at?
- Math help......
- Aerodynamically optimized car hubcap
- Cummins Ford Econoline Van Project
- Downsizing rim diameter, what is the optimal tire size?
- Brake pad drag reduction clips (theoretical)
- Does anyone have a good source of semi-rigid, 4"-6" flexible material?
- 2007 Camry SE
- Nissan Leaf antenna removal questions--Involved with SatNav + SiriusXM, or JUST Sirius/AM/FM?
- Best LRR Tires
- grayOS mod thread
- Cruze ECO 6MT driving tips
- Passive prechamber spark plug (DIY??)
- Theoretical PZEV?? ?
- Tall Rear End Gears
- "I want to tinker with my Mercedes Sprinter to improve MPG."--friend
- Been gone a while...
- FREE! 2008 Toyota Prius Mint Green Turtle
- Mazda i-ELOOP, potential use in retrofits?
- Ben Fixes a Chevy Volt
- Tires 215R65 or 205R75, which has lower rolling resistance
- Project Toyota Yaris III 2012 Engine 1KR-FE
- How many MPG are you getting at 70 mph (GPS)
- Tire Valve Stem With Two Ends?
- Dodge Ram 2500 eco build
- Brake pad drag reduction clips (tested)
- 2001 Honda Civic EOC Kill Switch
- Using tuners on pickup trucks
- Ecoboost 1.0 3 Cylinder - 2015 Ford Focus
- Looking for expert turbocharger advice for Honda K20
- More efficient HVAC fan for cars?
- 225/50R17 -> 215/50R17?
- Camber/Caster alignment questions
- My 40 MPG Corvette is going well but I need help
- Battery Overview
- Build Thread, IC injection cam and rewound etc IMA H Insight2002
- Shifting with torque converter locked
- What will be the Ultimate North America Econobox of the future?
- What PSI do you run on your tires?
- A better alternator delete
- 40 MPG Corvette That Sacrifices NOTHING
- Friendly Wager: 60 mpg 95 Mercury Tracer
- Retaining heat use during EOC
- Battery Hookup - used Li batteries very affordable
- 2nd gen Prius CNG conversion
- New tires, let's see what happens
- 2003 Civic 4dr K20a3 turbo **Build Thread**
- ALERT! - Wisconsin Insight G1 Owners - Contest your $75 Hybrid Fee
- Question regarding changing tire size
- Low power fuel tank heater for better winter mileage?
- Help with gearing
- Fuel is Fuel.... An alternative view to economy
- Hyundai Genesis?
- 2019 Sentra rental. Ask away!
- Non resistor spark plugs
- My newest low budget mod......Signature display
- 2001 Subaru Outback
- Adding regenerative braking to the Mirage
- Pulled the trigger on some Cooper AT3 4S tires
- ABT rs4 aero wheel - thoughts?
- 6th gen Civic Question
- How much power will a Torque Converter Clutch hold?
- Wich tires for bmw e36?
- Reverse mud flaps
- Modding my 1979 Ford F150 - looking for some opinions
- New Tires = ~Same MPG as Worn Tires
- Koenigsegg free valve system
- Showcase for Wheel Discs
- Aero-Volt Project
- Some European Safety Lemons
- Ford FoCus & Ford Fiesta Dual Cluth Dry
- Prototype camo wrap: yea or nay?
- Warm air intake did not help
- Adding EGR for MPG
- Transmission running too cold?
- Better mileage with AC on?
- 15 Wheel /Rims Lightweight 5-100 Lug Unavailble
- My 2nd Honda Insight
- Which one of you guys made this?
- New daily...mpg is depressing (2006 3.3L V6 Toyota Highlander limited AWD)
- Good vehicle for a touring band?
- Needing some insight on OBD-2
- Tire pressures and driving conditions
- Wheels: Smaller rims, taller sidewalls?
- Tow Rig/Daily Driver/Weekend Toy thoughts?
- 40.6 mpg in a full size Chevy pickup
- MPG by BRAND TEST 2008 Tahoe 6.0L v8.. (REAL World tests)
- 30 mpg in the Rav4!
- Install a transfer case backwards?
- Two faced insight build underway. K series gearing? discuss
- Just hit 27mpg!