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Old 04-25-2013, 05:02 PM   #11 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.07 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
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Well as long as it's not costing you anything, no harm done.

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It depends (TM). App accuracy will vary depending on your mix of lean burn vs. stoichiometric driving. If you're mostly city it'll be closer than if you're mostly highway.

The app has no way to tell when you've dropped into lean burn and your efficiency has gone way up. It (and the ScanGauge & Ultragauge) assumes a stoichiometric A/F ratio only (with some exception for open loop/cold starts, etc.).

I'm not sure how much efficiency improves for the HX when you hit lean burn, but on a 100% highway trip in the Insight (lean burn), it would be off (low) by about 25% by the end.

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Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
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Ecodriving test: Manual vs. automatic transmission MPG showdown



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Old 04-25-2013, 05:14 PM   #12 (permalink)
Cyborg ECU
 
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,297

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Looks just like mine (a DX witha CX transmission). Are you going to do aero mods? Maybe an injector kill switch and an alternator on/off switch too? Try removing the power steering belt: you won't miss it and it will save a little fuel. If you want the PS back, just reinstall the belt.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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Old 04-25-2013, 05:53 PM   #13 (permalink)
Highway Creeper
 
Join Date: Apr 2013
Location: West Virginia
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Opossum - '97 honda civic HX
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I'll keep an eye out on it then. I have no EXACT way of knowing how much mileage im getting. I drive very specific routes 15% highway, 30% city, and the rest up and down backroads staying a constant 55 mph. I use a GPS to track my miles for now but that is innacurate for city driving given I have an 8 metre drift.

I dont know mileage because the odometer is broken, I'm working on fixing it but the VSS isnt the problem so I'm likely dealing with a broken odometer motor.

Slight aero-mods planned. outer door seal replacement/mod, air intake damming, and as some point I'd like to rig up an underpan.
I'm not going to remove any belts or engine systems, I spend long periods of time in my car and I'd like to keep the creature comforts. As long as I can maintain 38mpg I'm more than happy (i do however only use AC when its excruciatingly hot)
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Old 04-25-2013, 06:54 PM   #14 (permalink)
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Location: Texas
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The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

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Quote:
Originally Posted by MetroMPG View Post
Welcome to the forum!

I don't understand you nitrogen guys. If it's not on a plane, or on a race track, and if you're smart enough to monitor your own tire pressure...
Let's see who IS smarter.....
Drove 80,000 + miles and NEVER. ...(repeat) NEVER had to adjust the psi in the tires. Never had to look for the tire gauge.....never paid for air.....never had to kneel down and screw w/ the psi.

Oh and never had a 2psi difference in pressure......

oh and PS......the nitro was free each time.


But yeah.....let's play "who's smarter......"
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MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."

ECO MODS PERFORMED:
First: ScangaugeII
http://ecomodder.com/forum/showthrea...eii-23306.html

Second: Grille Block
http://ecomodder.com/forum/showthrea...e-10912-2.html

Third: Full underbelly pan
http://ecomodder.com/forum/showthrea...q45-11402.html

Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938
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Old 04-25-2013, 09:05 PM   #15 (permalink)
Highway Creeper
 
Join Date: Apr 2013
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Opossum - '97 honda civic HX
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if you can get free N2 more power to you. Most people have to pay around $30 for the time it takes.

I'm not worried about it. First thing is first, get the car stable. Still need to work out that intake manifold and eventually get my sludged head to the shop.

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