| MPG gauge GL1800 | Rate Topic |
| Moderators: redbaron, MDKramer, Flyone, AZgl1500 |
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| Posted: Thu Oct 20th, 2011 06:30 pm | 1st Post |
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I just ordered a MPguino. Seems it is possible to measure and display your fuel consumption (MPG or l/100Km) for nearly any EFI equiped vehicle with an accuracy of +/- 1 %. So it should work for a GL1800 Has anyone any experience with this device ? It will take some weeks to have it shipped to my place (The Netherlands, Europe). I already located the possible wires from the ECM which should be connected. Installation is done by connecting to 4 points: 1. the VSS (pulses for the speedometer) 2. Any of the 6 injectors ground wire (the one that leads to the ECM) 3. constant 12 volt 4. signal ground Will keep you updated when I get it installed and running. Last edited on Tue Oct 25th, 2011 08:16 pm by ad francois ____________________ Ad Francois GL1800A 2003, red. Bergen op Zoom The Netherlands Previous Bikes: DKW 125, Maico 200,DKW 250, Ducati 160, BMW R26, Honda 350-4, Honda CX500, GL1100, GL1500 |
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| Posted: Thu Oct 20th, 2011 07:46 pm | 2nd Post |
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Never heard of it. Got a link?
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| Posted: Thu Oct 20th, 2011 07:51 pm | 3rd Post |
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I just feel lucky to have a fuel guage on my motorcycle. Years ago that was unheard of and I owned a few. Many are still without guages, but that number is shrinking.
____________________ Yesterday is for memories! Today is for making memories! Tomorrow is a concept that does not exist! What are you waiting for? ... Sam-n-Elaine Just livin' the dream!!!!! Just another day in paradise!!!!! Honor above all else!!!!! Thank you Dylan Saunders for the layout of my greeting!!!! |
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| Posted: Thu Oct 20th, 2011 10:58 pm | 4th Post |
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My buddy just bought a new harley crusser type bike it has no gas gauge wilf
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| Posted: Fri Oct 21st, 2011 12:03 am | 5th Post |
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I just calculate it on my phone when I fill up, but your idea is interesting. Let us know how it turns out.
____________________ I just got my bike back from the DR. All is well.  I got my cookies at the First Eastern M&G!! (Darksider) Total Miles: 43,000+ and counting. Current rides: 04 GL1800 (my baby), 08 Suzuki SX4, 86 Toyota Pickup Custom Cab Turbo 4X4 (My other baby). Previous Rides: 1980 Suzuki GS1000, USS Louisiana Gold (SSBN 743) |
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| Posted: Fri Oct 21st, 2011 05:37 am | 6th Post |
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The link to the MPguino is: http://opengauge.org/mpguino/ The wiki will give you comprehensive data what it's all about. The latest pre-assembled set will come with the latest software v0.86 and has the ATmega328 installed. Last edited on Tue Oct 25th, 2011 08:18 pm by ad francois ____________________ Ad Francois GL1800A 2003, red. Bergen op Zoom The Netherlands Previous Bikes: DKW 125, Maico 200,DKW 250, Ducati 160, BMW R26, Honda 350-4, Honda CX500, GL1100, GL1500 |
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| Posted: Thu Oct 27th, 2011 05:20 pm | 7th Post |
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Does this gauge give you the instant fuel consumption in Miles per Gallon? This is not the case on my GL1800 2003, that's why I want to have information on instant fuel consumption to know what's best gear and rpm when towing my trailer.
____________________ Ad Francois GL1800A 2003, red. Bergen op Zoom The Netherlands Previous Bikes: DKW 125, Maico 200,DKW 250, Ducati 160, BMW R26, Honda 350-4, Honda CX500, GL1100, GL1500 |
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| Posted: Sat Nov 19th, 2011 06:41 pm | 8th Post |
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Still didn't receive my order, but meanwhile I studied the arduino project and ordered and received the components I need in China. You can use a arduino nano pro and a 16*2 character LCD to construct this device yourselves. I have now the processor and LCD stuck on a breadboard and it's already running the software  . Within a week I will get some other electronic components to get the thing hooked up to my GL1800.( 2 resistors and 2 zener diodes, that's all!) It is possible to calibrate the speed in my garage by running the bike on it's stand and measure the pulses from the speedometer and calculate the factor to display the correct Km or miles per hour on the device. Soon I will show you some pictures about this project.
____________________ Ad Francois GL1800A 2003, red. Bergen op Zoom The Netherlands Previous Bikes: DKW 125, Maico 200,DKW 250, Ducati 160, BMW R26, Honda 350-4, Honda CX500, GL1100, GL1500 |
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| Posted: Sat Nov 19th, 2011 08:47 pm | 9th Post |
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So do you get the whole unit for $55, or have to make it yourself? Does it come with a case or housing?
____________________ Tom, GL1800 
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| Posted: Sun Nov 20th, 2011 03:31 pm | 10th Post |
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It is the whole unit but without housing.
____________________ Ad Francois GL1800A 2003, red. Bergen op Zoom The Netherlands Previous Bikes: DKW 125, Maico 200,DKW 250, Ducati 160, BMW R26, Honda 350-4, Honda CX500, GL1100, GL1500 |
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| Posted: Thu Feb 9th, 2012 05:38 am | 11th Post |
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I have a unit connected now: https://picasaweb.google.com/francois.ad/Brandstofverbruiksmeter?authuser=0&feat=directlink I am currently building my own with connection to the map sensor so I can take fuel pressure into account in the calculation. Due to winter I cannot test drive at the moment. Another possibility I was thinking of to add an extra chip to tweak the intake temperature, which should result in extra power when tuned correctly. Will keep you informed.
____________________ Ad Francois GL1800A 2003, red. Bergen op Zoom The Netherlands Previous Bikes: DKW 125, Maico 200,DKW 250, Ducati 160, BMW R26, Honda 350-4, Honda CX500, GL1100, GL1500 |
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| Posted: Thu Feb 9th, 2012 06:17 am | 12th Post |
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now that is interesting.
____________________ ~John |
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| Posted: Thu Feb 9th, 2012 10:48 am | 13th Post |
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I am curious how connecting to the MAP sensor can give you a fuel pressure reading.
____________________ I am doing the best I can so don't give me any crap. Honorary Wild Rhino Darksider #304 the force is strong in this one. |
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| Posted: Thu Feb 9th, 2012 07:06 pm | 14th Post |
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The GL1800 has a vacuum regulated fuel pressure. Max pressure is 3 bar and lowest pressure is about 1.2 bar. When you apply the formula: new flow rate = old flow rate × √(new pressure ÷ old pressure) you can calculate the effect on flow rate. Maybe there is an offset that should be applied. But by applying the above formula you can easily find out that at half the pressure the flow is about 60% At the moment it's all theorethical. Let's find out when I install my device... I will keep you informed, but it may take a few months. First I want to hook up the processor to a Nokia screen instead of the LCD character. This requires a total re-programming of the interactive and output screens. It took me weeks to find a bigger character that I can use on the Nokia 5510, but that part I have working now. Everything is now on a breadboard, but to install it on the bike I need to make a PCB design to install all the electronic components. (I never created one...) And I have no electronic background at all, so I don't know if I can get it first time right. I will keep you informed. If you have any questions or suggestions, feel free to address them to me. Last edited on Thu Feb 9th, 2012 07:08 pm by ad francois ____________________ Ad Francois GL1800A 2003, red. Bergen op Zoom The Netherlands Previous Bikes: DKW 125, Maico 200,DKW 250, Ducati 160, BMW R26, Honda 350-4, Honda CX500, GL1100, GL1500 |
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| Posted: Fri Feb 10th, 2012 12:39 am | 15th Post |
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I see you are trying to calculate fuel pressure based on the MAP reading. I think you are trying to split hairs because the fuel pressure does not vary that much and only on hard acceleration or heavy load. If you are looking to maximize economy you only need to know the injection rate and speed. If you can get this thing to show exact instant consumption you have done well and I applaud you for it.
____________________ I am doing the best I can so don't give me any crap. Honorary Wild Rhino Darksider #304 the force is strong in this one. |
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| Posted: Sat Feb 11th, 2012 04:57 pm | 16th Post |
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I think you are right. I assumed it was 1.2 bar lowest, but after looking up some old tuning data I used in the past, it is 2.1 bar minimum and 3.0 bar max. Nevertheless I am going to include the map reading so I can display the vacuum.
____________________ Ad Francois GL1800A 2003, red. Bergen op Zoom The Netherlands Previous Bikes: DKW 125, Maico 200,DKW 250, Ducati 160, BMW R26, Honda 350-4, Honda CX500, GL1100, GL1500 |
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