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Old 08-08-2008, 07:03 PM   #1 (permalink)
testing the waters
 
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Pre OBD Mpg Gauge??? Not Vaccum Gauge

Does anyone know of a MPG Gauge that you can buy that shows true real time miles per gallon?

Of course there's Scangauge for newer cars, but I drive a Car from the 80's and probably will continue for a long time.

I bought one that came out in the 60's but it only goes up to 25 miles per gallon, and doesn't come with instructions (it's a really complicated analog computer)

Someone's gotta make one that's better!

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Old 08-08-2008, 07:06 PM   #2 (permalink)
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If you're fuel injected you can use the mpguino.

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Old 08-08-2008, 08:59 PM   #3 (permalink)
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Quote:
Originally Posted by SVOboy View Post
If you're fuel injected you can use the mpguino.

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If you're electronic fuel injected you mean?
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Old 08-08-2008, 09:00 PM   #4 (permalink)
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I can't type all those extra words,
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Old 08-10-2008, 09:20 PM   #5 (permalink)
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I seek one too. 87 carbed sube. Must be dynamical. I can go from mini dragster 20s mpg into the high 50s. all same engine, same carb same everything. Real engines do this, ECUs don't <-as you can see its a blue serious face versus ->
I had heard or maybe even seen the old mpg computers in a gm cadillac or maybe pintiac, thay had strange gadgets... anyway, the limit was the problem indeed. they used alot of fuel back then...
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Old 08-10-2008, 09:51 PM   #6 (permalink)
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Quote:
Originally Posted by bgd73 View Post
I seek one too. 87 carbed sube. Must be dynamical. I can go from mini dragster 20s mpg into the high 50s. all same engine, same carb same everything. Real engines do this, ECUs don't <-as you can see its a blue serious face versus ->
I had heard or maybe even seen the old mpg computers in a gm cadillac or maybe pintiac, thay had strange gadgets... anyway, the limit was the problem indeed. they used alot of fuel back then...
I've got a 1980 subie myself and would like to have one, which is why I'm going to build one using a digital gph meter for the fuel


Hey got an extra carb laying around?
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Old 08-11-2008, 04:23 PM   #7 (permalink)
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A lot of BMW models came with a MPG gauge. I had on in my 325ES, but it may be a PITA to get it to talk to the rest of the car...
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Old 08-11-2008, 06:53 PM   #8 (permalink)
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Originally Posted by Bullockracing View Post
A lot of BMW models came with a MPG gauge. I had on in my 325ES, but it may be a PITA to get it to talk to the rest of the car...
I've seen those in action, my guess is they're highly calibrated vacuum meters, but I could be wrong.
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Old 08-12-2008, 09:29 AM   #9 (permalink)
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Originally Posted by forgottenmindset View Post
I've seen those in action, my guess is they're highly calibrated vacuum meters, but I could be wrong.
You may be right - when I had it gas was so cheap I never even paid attention to how it worked... The car did have a very complex onboard computer, though the gauge was an old-fashioned needle.

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