Go Back   EcoModder Forum > EcoModding > Instrumentation > OpenGauge / MPGuino FE computer
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-14-2008, 04:40 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: May 2008
Location: Loading...
Posts: 24

CRX - '90 Honda CRX HF
90 day: 34.15 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
MPGuino for a 1990 CRX HF

Can anyone help me with a MPGuino. I dont really know what it is but i am pretty handy with electronics. Could you tell me what i need, how much it will cost/where to get it, and got any easy to follow diagrams to install it?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-14-2008, 08:21 PM   #2 (permalink)
Master EcoModder
 
wagonman76's Avatar
 
Join Date: Jun 2008
Location: Northwest Lower Michigan
Posts: 1,006

Red Car - '89 Chevrolet Celebrity CL 4 door
Team Chevy
90 day: 36.47 mpg (US)

Winter Wagon - '89 Pontiac 6000 LE Wagon
90 day: 28.26 mpg (US)
Thanks: 8
Thanked 16 Times in 15 Posts
This link should tell you most everything you need to know to get started.
MPGuino - EcoModder

Someone also just recently made it into a compact kit form.
http://spiffie.org/kits/mpguino/start.shtml

I made one using the original Arduino board, and a green LCD. Mine works great.
__________________

Winter daily driver, parked most days right now


Summer daily driver
  Reply With Quote
Old 10-15-2008, 08:15 PM   #3 (permalink)
EcoModding Lurker
 
Join Date: Jun 2008
Location: Stuart, FL
Posts: 21

SeeOurWrecks - '91 Honda CRX Si
90 day: 35.59 mpg (US)

Accord_Inspire - '93 Honda Accord EX
90 day: 24.56 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
As far as I know you need to get an electronic vss, the crx uses a cable driven one, put the vss's from later civics use an electronic one and it can be put on, but I believe you need an updated dash gauge assembly...

not too sure how it all works
__________________


  Reply With Quote
Old 10-16-2008, 12:16 AM   #4 (permalink)
EcoModding Lurker
 
Join Date: May 2008
Location: Loading...
Posts: 24

CRX - '90 Honda CRX HF
90 day: 34.15 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
is there a CRX specific guide that anyone knows of with pictures or something because i only have vague experience with wiring ANYTHING up.
  Reply With Quote
Old 10-16-2008, 12:42 AM   #5 (permalink)
Dartmouth 2010
 
SVOboy's Avatar
 
Join Date: Nov 2007
Location: Hanover, NH
Posts: 6,427

Vegan Powa! - '91 Honda CRX DX
Team Honda
90 day: 66.52 mpg (US)
Thanks: 92
Thanked 114 Times in 82 Posts
Send a message via AIM to SVOboy Send a message via MSN to SVOboy Send a message via Yahoo to SVOboy
I should get off my butt and make one. Just find some crx ecu pinouts and track down the right pins. I'm pretty sure I have ecu pinouts up on crxmpg.com
  Reply With Quote
Old 12-10-2008, 09:05 PM   #6 (permalink)
EcoModding Lurker
 
Join Date: Nov 2008
Location: Parma, MI
Posts: 38
Thanks: 0
Thanked 0 Times in 0 Posts
Looking through the CRX manual it is cable driven but there is a speed pulser on the back of the gauge panel that outputs 4 pulses/cable rev. So that should work for VSS, haven't looked into if it goes to the ECU or not (would work either way just easier wiring.) For cars with optional cruise control doesn't it have to have an electronic speed signal somewhere? Any car that has an electric analog gash which I think most do should have a way to tap into the speedo somehow.

I just spent an unknown amount of time putting together my new MPGuino (excited) Ordered from spiffie V2
You'll need a soldering iron, solder, and side cutters and a multimiter probably. You'll also need soldering skills or bravery or a friend who does. It's not actually that hard but I've been doing it on rare occasion for quite some time. Usually just wiring in a car for stereo or aftermarket ECU or similar. Not too often with actual circuit boards. But it actually is a pretty basic skill if you have good fine motor control and aren't shakey.

Anyway, I've also got a 1990 CRX manual so I should be able to figure out the settings. I think I have the Vss figured out and the microsecond/gallon shouldn't be too hard with some math and looking up the injector size. I haven't hooked up to the wires in the car yet (1989 Civic Si d16a6) but should have that accomplished as well as some testing this weekend. So, I should be able to at least give ballpark figures for the settings. I also keep track of my tank mileage already so I can compare results and have a good idea of my average mpg.
__________________
1987 Mazda RX-7 Turbo anti-eco modded 15mpg E85 300hp laptop programmable EFI
1989 Honda Civic Si-temporary "beware of dog" grill block 29mpg winter (last tank before grill block and stock underbelly pan was off b/c of quick coolant change)

Last edited by sevenspeed; 12-10-2008 at 09:25 PM..
  Reply With Quote
Old 07-19-2009, 01:17 AM   #7 (permalink)
Grasshopper
 
alohaspirit's Avatar
 
Join Date: Feb 2009
Location: Hawaii
Posts: 964

Makai - '01 Toyota Echo 4D Auto
90 day: 34.45 mpg (US)

New Galaxy - '07 Toyota Prius
90 day: 42.15 mpg (US)
Thanks: 25
Thanked 30 Times in 25 Posts
Quote:
Originally Posted by SVOboy View Post
I should get off my butt and make one. Just find some crx ecu pinouts and track down the right pins. I'm pretty sure I have ecu pinouts up on crxmpg.com
id be interested in this

__________________
Past Present Future?
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Only getting 42mpg in my 1990 CRX HF dylanu Hypermiling / EcoDriver's Ed 11 08-18-2011 02:42 PM
What could be wrong if im only getting 40mpg in my 1990 CRX HF? dylanu EcoModding Central 13 10-08-2008 12:50 PM
New guy with a 1990 crx hf. gasnmyveins EcoModding Central 6 09-06-2008 01:21 AM
New guy with a 1990 crx hf. gasnmyveins Introductions 2 09-04-2008 01:04 AM
Repping the old school Hondas - 85 CRX HF 1GCRXHF Introductions 4 06-16-2008 01:14 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com