04-09-2013, 11:58 PM
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#1 (permalink)
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MPG...what?
Join Date: Jan 2008
Location: Finksburg, MD
Posts: 145
Terkle - '97 Toyota Tercel Whitehawk 90 day: 40.91 mpg (US) Bubble - '10 Toyota Yaris base 90 day: 41.88 mpg (US) Deva - '13 Chevrolet Spark LS 90 day: 39.82 mpg (US) Malibu5 - '82 Chevrolet Malibu Classic 90 day: 17.61 mpg (US) Highlander - '06 Toyota Highlander Limited 90 day: 21.24 mpg (US)
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Chevy Spark + rear diffuser
__________________
-Greg...the exhaust freak.
-06 Highlander 3.3awd
-10 Yaris sedan
-97 Tercel, 1NZfe swapped
-96 Tercel
-82 Malibu 1UZfe swapped
-19 Fit (wifey ride)
www.pipedreamsfab.com
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04-10-2013, 07:15 AM
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#2 (permalink)
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lurker's apprentice
Join Date: May 2008
Location: the Perimeter
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PlainJane - '12 Toyota Tacoma Base 4WD Access Cab 90 day: 20.98 mpg (US)
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I'm jealous. I wish someone would make one of those for my Fit! I put a front undertray on, which helped mileage marginally (~1 MPG) but really, really, helped with stability at highway speeds and in windy conditions. But the back end is still open.
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04-10-2013, 07:44 AM
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#3 (permalink)
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MPG...what?
Join Date: Jan 2008
Location: Finksburg, MD
Posts: 145
Terkle - '97 Toyota Tercel Whitehawk 90 day: 40.91 mpg (US) Bubble - '10 Toyota Yaris base 90 day: 41.88 mpg (US) Deva - '13 Chevrolet Spark LS 90 day: 39.82 mpg (US) Malibu5 - '82 Chevrolet Malibu Classic 90 day: 17.61 mpg (US) Highlander - '06 Toyota Highlander Limited 90 day: 21.24 mpg (US)
Thanks: 8
Thanked 2 Times in 2 Posts
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Its a universal piece. I had to fabricate/weld some aluminum brackets to mount the leading edge.
__________________
-Greg...the exhaust freak.
-06 Highlander 3.3awd
-10 Yaris sedan
-97 Tercel, 1NZfe swapped
-96 Tercel
-82 Malibu 1UZfe swapped
-19 Fit (wifey ride)
www.pipedreamsfab.com
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04-10-2013, 08:40 AM
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#4 (permalink)
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Cyborg ECU
Join Date: Mar 2011
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Quote:
Originally Posted by malibuguy
Its a universal piece. I had to fabricate/weld some aluminum brackets to mount the leading edge.
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How did you gauge the angle? There are more and less effective angles, depending on vehicle. Can you adjust it?
__________________
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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04-10-2013, 09:03 AM
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#5 (permalink)
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MPG...what?
Join Date: Jan 2008
Location: Finksburg, MD
Posts: 145
Terkle - '97 Toyota Tercel Whitehawk 90 day: 40.91 mpg (US) Bubble - '10 Toyota Yaris base 90 day: 41.88 mpg (US) Deva - '13 Chevrolet Spark LS 90 day: 39.82 mpg (US) Malibu5 - '82 Chevrolet Malibu Classic 90 day: 17.61 mpg (US) Highlander - '06 Toyota Highlander Limited 90 day: 21.24 mpg (US)
Thanks: 8
Thanked 2 Times in 2 Posts
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I kinda just eyed it up. I put the leading edge just above what I think the main path of the airflow is going coming under the axle. I may have got it right. I may be off. I want to fill in the rest of the area once I get ahold of some aluminum sheet.
__________________
-Greg...the exhaust freak.
-06 Highlander 3.3awd
-10 Yaris sedan
-97 Tercel, 1NZfe swapped
-96 Tercel
-82 Malibu 1UZfe swapped
-19 Fit (wifey ride)
www.pipedreamsfab.com
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04-10-2013, 10:43 AM
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#6 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Looks purty, but a diffuser needs clean flow to work properly. Since the underbody ahead of it is dirty, aerodynamically speaking, it's probably not doing much!
A belly pan would help. Next project??
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The Following User Says Thank You to MetroMPG For This Useful Post:
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04-10-2013, 12:25 PM
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#7 (permalink)
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MPG...what?
Join Date: Jan 2008
Location: Finksburg, MD
Posts: 145
Terkle - '97 Toyota Tercel Whitehawk 90 day: 40.91 mpg (US) Bubble - '10 Toyota Yaris base 90 day: 41.88 mpg (US) Deva - '13 Chevrolet Spark LS 90 day: 39.82 mpg (US) Malibu5 - '82 Chevrolet Malibu Classic 90 day: 17.61 mpg (US) Highlander - '06 Toyota Highlander Limited 90 day: 21.24 mpg (US)
Thanks: 8
Thanked 2 Times in 2 Posts
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Quote:
Originally Posted by MetroMPG
Looks purty, but a diffuser needs clean flow to work properly. Since the underbody ahead of it is dirty, aerodynamically speaking, it's probably not doing much!
A belly pan would help. Next project??
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indeed. i want to look into maybe getting the factory panels from an EV Spark, but most likely Ill make my own. This car looks really simple to flatten out.
__________________
-Greg...the exhaust freak.
-06 Highlander 3.3awd
-10 Yaris sedan
-97 Tercel, 1NZfe swapped
-96 Tercel
-82 Malibu 1UZfe swapped
-19 Fit (wifey ride)
www.pipedreamsfab.com
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The Following User Says Thank You to malibuguy For This Useful Post:
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04-10-2013, 02:29 PM
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#8 (permalink)
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Master EcoModder
Join Date: May 2012
Location: USA
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Question is, how it effects fuel economy. Looking cool can take a backseat.
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04-10-2013, 04:20 PM
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#9 (permalink)
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MPG...what?
Join Date: Jan 2008
Location: Finksburg, MD
Posts: 145
Terkle - '97 Toyota Tercel Whitehawk 90 day: 40.91 mpg (US) Bubble - '10 Toyota Yaris base 90 day: 41.88 mpg (US) Deva - '13 Chevrolet Spark LS 90 day: 39.82 mpg (US) Malibu5 - '82 Chevrolet Malibu Classic 90 day: 17.61 mpg (US) Highlander - '06 Toyota Highlander Limited 90 day: 21.24 mpg (US)
Thanks: 8
Thanked 2 Times in 2 Posts
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The tank with it is the best so far...but we will see
__________________
-Greg...the exhaust freak.
-06 Highlander 3.3awd
-10 Yaris sedan
-97 Tercel, 1NZfe swapped
-96 Tercel
-82 Malibu 1UZfe swapped
-19 Fit (wifey ride)
www.pipedreamsfab.com
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07-29-2017, 05:23 PM
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#10 (permalink)
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EcoModding Lurker
Join Date: Jul 2010
Location: Reno, Nevada
Posts: 2
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Hey, Im not able to see pics at this late date of diffuser, can you send to me or repost, really interested for my 2013 Spark, thanks
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