Re: Ethanol - Saab 900 Bulletin Board - Saabnet.com
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Posted by Jerome (more from Jerome) on Wed, 8 Jul 2009 15:59:36
In Reply to: Re: Ethanol, Landjet [Profile/Gallery]
, Wed, 8 Jul 2009 14:06:30
This is correct, the Saab computer will not be able to run the car at the proper air fuel ratio. You can do this with a Megasquirt system, and in fact you can run the car as a true flexfuel system because an oem 'fuel type' sensor has been worked into the Megasquirt system as I recall. The sensor figures out which fuel type you have and then Megasquirt runs the proper fuel map. You will need to go to their website to learn more about flexfuel. There you can also probably find definitive information on corrosion issues.
Another alternative is to use the much more modern Saab Trionic system but I don't know if you would be able to run the car as a flexfuel vehicle, you might have to run it 100% alky or 100% gas. The Trionic system has been completely opened up and there is free software to access the chip/maps, search for t5suite on google. My guess is that you can easily convert a stock 2 liter Trionic gasoline map to alcohol without much trouble. If the multiplier to convert a gas map to alky is not on the t5suite website it must be on Meqasquirt or elsewhere on the internet.
Of course you will need to also handle cold weather starting, as alky loses volatility, but you probably know that if your here asking about it. And you probably know that there is less energy in alky compared to gas so you will need larger fuel injectors.
posted by 67.159.5...
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