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Default Fuel change - Gasoline to ethanol) - 05-10-2021, 10:16 AM

Helo!

I have a BMW 320i 2016 Activeflex, if I change the fuel from gasoline to ethanol will I need to adjust the jb4 or something like that?

Thanks
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Default 05-10-2021, 03:53 PM

It depends on how much ethanol you're adding and how the logs look.

What do you currently run? Where are you located, and do you have a current log?

Generally speaking you can't just switch from pump gas to E85 but there are some exceptions like Brazil where the cars are better prepped for ethanol from the factory.



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Default 05-10-2021, 04:33 PM

Hi Steve!

Sorry, I forgot to mention. I'm in Brazil and my car is the Activeflex version, which from the factory accepts both gasoline and ethanol.
My tank is in reserve, the idea is to complete it only with ethanol and run with 100% ethanol.

If you need any configuration, if you want to use gasoline in the future would it be possible to revert the configuration?

Thanks.
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Default 05-11-2021, 09:53 AM

That's not a JB4 function, it'll be more of an ECU function. I now that option is offered in Brazil. Ultimately it'll depends on how the logs look. That's a big jump but isn't all of your Fuel at least E25 or something like that?



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Default 05-12-2021, 04:56 AM

Hi,

Here in Brazil, hydrated ethanol fuel is sold.

My idea would be to let the tank reach the reserve and then fill the fuel tank with Hydrated Ethanol, log and post it here for analysis.

Do you understand that this procedure is safe / correct?

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Default 05-12-2021, 09:59 AM

I personally wouldn't recommend running straight ethanol. I'd mix to E85 or so.



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Default 05-12-2021, 10:05 AM

Would E85 be 85% ethanol and 25% gasoline?
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Default 05-13-2021, 10:45 AM

Nope...it'd be 85% ethanol and 15% gasoline.



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Default 05-14-2021, 05:19 AM

yes ����
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