60 MPG Toyota Yaris
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I do a lot of highway with my 2014 Yaris CE and I wasn't pleased with the stock mpg.
I started with a few small things but once I made my own custom undertray, results really started to show. Now with my current setup, I have no problem maintaining 42-45mpg city and 50mpg highways. With some hypermiling, I've had my scan gauge hit 60mpg a few times now which was impossible when the car was stock. The front grill and part of the bumper were also blocked off along with a rear diffuser (No fins just cover) and the gas tank. All I have left to cover are parts of the floors to complete the undertray. High-speed stability has also improved dramatically along with side winds and road noise. Not the prettiest but its functional, secure, and cost me under 50$ https://ecomodder.com/forum/attachme...3&d=1647822694 https://ecomodder.com/forum/attachme...4&d=1647822704 https://ecomodder.com/forum/attachme...5&d=1647822714 |
Looks good, and congrats on the improved milage. Those are some very good numbers!
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Good work!
What is your highway speed? |
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My normal highway commute consists of speeds of 55 to 70mph. Stock when going 70 I was having trouble getting EPA 37-38MPG but now I can get 42mpg at higher speeds. Not being thrown around by the wind is also very nice now. |
Nice going!
Manual transmission? Any other mods planned? |
Diffuser
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Yes its manual, Im sure I would have a really hard time doing this in an automatic. I'm not sure what will be next, I got some small vortex generator fins I will put on the taillights like the prius C but that probably won't give me much gains in the real world. It's starting to get warm enough to remove my winter intake so I will be working on refining my summer one that goes into the fender. Finishing the undertray will be next but with only about 4 feet of the center floor left to cover, the main benefits are already being felt. The car is so stable now at high speeds which is exactly what I wanted but when I do slow down, the mpg gains really show. |
how do you keep the under tray in play or insert it? im looking to make one for my car too. no idea how to clip it out
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Why...??? I run my exhaust heated intake year round. The hotter the air the better. Your computer will pull the fuel back to the correct air fuel ratio. Cooler air contains more oxygen thus more fuel will be needed to keep the correct ratio. Is your mpg in Imperial or U.S. ? > . |
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After seeing these intakes at the Chicago Auto Show, I decided to try ducting my intake to the front of the car in 2020: https://ecomodder.com/forum/member-v...723-122216.jpg I verified that intake air temperature had been reduced by monitoring it on the Scangauge. Statistical analysis (hypothesis testing--compares sample data to the normal distribution to determine if there is enough evidence to claim a population parameter has changed) of the fuel consumption for the 6 months previous (Jan-June) compared to the 6 months after (July-Dec) showed that consumption had been reduced, from an average 4.49 L/100 km to 4.09 L/100 km. |
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