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-   -   E85 Question (https://www.ft86club.com/forums/showthread.php?t=113947)

mdec 12-21-2016 03:59 PM

E85 Question
 
Lets say like a few folk here I want to keep the Car NA. Seems like the E85 + Cat-less Header + Tune is a common option. If I go with the Moto East Flex-Fuel kit & at some point in time inevitably find myself with a mix of E85 & regular gas - exactly how does the de-tune process work ? does the ECU constantly modify the E85 tune based on %Ethanol detected or default to some 'lower tune' state.
Apologies in advance for this newbie question.









DustinS 12-21-2016 04:06 PM

The flex-fuel kit reads the ethanol percentage in the fuel and changes the tuning accordingly. You wouldn't need to do anything to switch between the two. That is why flex-fuel is so nice.

Chronology 12-21-2016 05:54 PM

Quote:

Originally Posted by DustinS (Post 2818613)
The flex-fuel kit reads the ethanol percentage in the fuel and changes the tuning accordingly. You wouldn't need to do anything to switch between the two. That is why flex-fuel is so nice.

This....IF you are running an EcuTek, the OFT will not auto adjust. So from my personal use, e85 at my station(s) gets me a e84, not bad. If I go 50/50 E85/Pump lets say I am at E60..The Moto-East FlexFuel tune and sensor enables the ecu to "re-tune" to a lower Ethanol content automatically.

Correction - OTF will NOW auto auto adjust.

pgranberg11 12-21-2016 05:54 PM

yea the flexfuel has a sensor to read out and that communicates with the car's ECU. depending on the tuner (guessing moto east if you're buying their flexfuel) they will create a table of different values which allows the car to adjust timing/afr on the fly depending on the ethanol content. It's quite convenient to run flexfuel rather than having two maps one for 93 octane and e85 since e85 isn't ALWAYS 85% ethanol..

DustinS 12-21-2016 05:57 PM

Quote:

Originally Posted by Chronology (Post 2818662)
This....IF you are running an EcuTek, the OTF will not auto adjust.

That is actually incorrect at this time. OFT Does offer a Flex-Fuel kit. :thumbup:

Chronology 12-21-2016 06:00 PM

Quote:

Originally Posted by DustinS (Post 2818666)
That is actually incorrect at this time. OFT Does offer a Flex-Fuel kit. :thumbup:

Oh sorry my bad. When I was deciding. OFT didn't support auto fuel adjustments. Ill adjust my comment. TIA.

Edit - Added link for OFT - http://www.openflashtablet.com/shop/...flex-fuel-kit/

mdec 12-21-2016 08:59 PM

thanks guy's so what your saying is that if I go for the OFT E85 Tune I need to purchase their Flex-Fuel kit fort the 'Auto Tune' capability to function correctly ?

Lantana frs 12-21-2016 09:32 PM

I have e85 a block from my house but I won't try it without a ff setup. It says right on the pump 59 percent minimum ethanol content. I don't feel safe running straight e85 tune.

swarb 12-21-2016 10:09 PM

Quote:

Originally Posted by mdec (Post 2818778)
thanks guy's so what your saying is that if I go for the OFT E85 Tune I need to purchase their Flex-Fuel kit fort the 'Auto Tune' capability to function correctly ?

yes


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