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Old 06-10-2016, 04:26 PM   #1 (permalink)
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Join Date: Jul 2015
Location: Illinois
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Purple People Mover - '97 Toyota Corolla CE
90 day: 37.25 mpg (US)
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Lurker w/ a few mods already ('97 Corolla 5-spd manual)

Hi all,

I've been lurking the ecomodder site for a while. Been trying to get the mileage up on my '97 Corolla, which was a hand-me-down from my dad. He bikes and walks to work, so the thing only has 97k miles on it at this point.

I've been driving it for a few years, mostly between my home and university, which is a 900 mile drive. This summer, however, I have an internship where I'll be driving a lot for the commute, unfortunately. This opens a lot of time for experimenting with mods, however, so it's not all bad.

At one point, I had rear wheel skirts, but after doing one of the mentioned 900 mile trips, I found no gain in mpg and removed them. I'll probably revisit the idea with some better fabrication and see if I can't improve on my fuel efficiency.

Anyway, just wanted to say hi and thanks for having this great community!

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Old 06-10-2016, 05:34 PM   #2 (permalink)
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CM400E - '81 Honda CM400E
90 day: 58.68 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
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Welcome to the site. Looks like you're doing pretty good already.
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Old 06-10-2016, 06:08 PM   #3 (permalink)
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Geo XL1 - '94 Geo Metro
Team Metro
Boat tails and more mods
90 day: 72.22 mpg (US)

Big, Bad & Flat - '01 Dodge Ram 3500 SLT
Team Cummins
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.

First mod should be instrumentation.

Otherwise it is difficult to know what works and what doesn't.

Welcome aboard...




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Old 06-10-2016, 07:09 PM   #4 (permalink)
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Purple People Mover - '97 Toyota Corolla CE
90 day: 37.25 mpg (US)
Thanks: 1
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I've been using fill-ups to gauge mpg's. That's been doing fine for me for a while. I'd like to get one of those obd2 transmitters, but I'm not sure if my car will transmit much useful info over it. I haven't had a check engine light even with some major problems with my car, so I can only assume that the obd2 system isn't working as it should...

In any case, I won't know until I try.
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Old 06-10-2016, 09:37 PM   #5 (permalink)
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Location: Coastal Southern California
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Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.37 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
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Quote:
Originally Posted by charlesthemonkey View Post
I've been using fill-ups to gauge mpg's. That's been doing fine for me for a while. I'd like to get one of those obd2 transmitters, but I'm not sure if my car will transmit much useful info over it. I haven't had a check engine light even with some major problems with my car, so I can only assume that the obd2 system isn't working as it should...

In any case, I won't know until I try.
If you don't have a gauge, your pump procedure needs to be as precise as possible to ensure reasonable reliability. Pumps are not terribly accurate. So... always go for a refill when the tank is down near empty. Always go to the same pump at the same station. Always fill at the slowest fill rate. Always stop filling at the first click. Doing this will minimize pump error and give you more reliable data for gauging your actual FE.
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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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mcrews (06-10-2016)
Old 06-10-2016, 09:42 PM   #6 (permalink)
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The Q Sold - '02 Infiniti Q45 Sport
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welcome!
pump up the tires to 40+psi!
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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 06-10-2016, 10:21 PM   #7 (permalink)
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little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
90 day: 23.4 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 24 AUTO
Pickups
Team Cummins
90 day: 18.5 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)

Jona Allison aero - '91 Dodge Ram D-250 Le
90 day: 19.08 mpg (US)
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Sounds like you are doing some costing,if so try a Engine Off Costing(EOC) and add a kill switch diy kill switch
EPA set obd2 in place in 1996 your 97 should be obd2 so the mpguin or
One of the others.
As mentioned previously adjust air pressure even switch to nitrogen
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1st gen cummins 91.5 dodge d250 ,HX35W/12
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 29.3mpg 97mi 3.311usg 7/27/16


Former
'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg


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mcrews (06-10-2016)
Old 06-10-2016, 11:28 PM   #8 (permalink)
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little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
90 day: 23.4 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 24 AUTO
Pickups
Team Cummins
90 day: 18.5 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)

Jona Allison aero - '91 Dodge Ram D-250 Le
90 day: 19.08 mpg (US)
Thanks: 198
Thanked 377 Times in 246 Posts
A cheep vacuum 0-30inmg gage to monitor engine load. I ran this (link)

This will help identify the minor up/and down gradesform flat . Hold the highest vacuum (lowest throttle) to maintain speed. Will help...
Check the 65+ and the 100+hipermileing links in the header
Gumby Stay Flexible
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1st gen cummins 91.5 dodge d250 ,HX35W/12
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 29.3mpg 97mi 3.311usg 7/27/16


Former
'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg


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Old 06-11-2016, 02:07 PM   #9 (permalink)
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Location: SE USA - East Tennessee
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Josie - '87 Toyota Pickup
90 day: 28.6 mpg (US)

Felicia - '09 Toyota Prius Base
90 day: 50.15 mpg (US)
Thanks: 396
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The vacuum gauge works even if your OBDII systems are wonky. I have one and its calibration is way off, but movement of the needle is sufficient to give you a moment-to-moment read on if you're asking more or less of the engine.

Being a 97, your Corolla should be fully compliant. Torque app on your phone and a bluetooth connector gives you nearly the same kind of monitoring as a Scangauge but for way less money.

For my part I would prefer a Scangauge, if only because it means I don't have to lay my phone on the instrument panel. But that's me.

There's some debate on wheel skirts. Not much around here, the hardest core guys have them, including a couple of Metros and Civics that are pulling down sky-high numbers. And of course, what works on one car may not on another. I lean in their favor. If you can equip some better instrumentation, you can do some ABA testing to nail down whether skirts can really help. I think they can, but their signal may be too small against the noise of other things going on and you can't get a really precise read on your car since you can only calculate tanks.

Welcome, by the way! It's fun here. It's a different kind of performance driving.
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Old 06-11-2016, 02:33 PM   #10 (permalink)
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Location: Texas
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The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

blackie - '14 nissan altima sv
Thanks: 2,203
Thanked 658 Times in 474 Posts
I did skirts when I was doing 40k miles a yr of hwy driving
Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938

__________________
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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