Fuel-It Flex Fuel Kit - Your Experience

[goodlettjr]

Does anyone have experience with this kit. Either S550 or S650 experience? Positive or negative. Both short and long term. I have watched a few videos on installs and it shows to work, but no one comes back and talks about the experience 6 months or a year later.

I'm running an E85 tune and would like to monitor it when

• I fill up to see the blend % of E in the tank
• When going back to a 93 tune and if I'm below E30.
• Winter vs Summer when mixing

Ford S650 Mustang Bluetooth Flex Fuel Kit for 2024+ Gen 7 5.0L

I thought about just doing a BT sensor through my OBDII, but I want a more complete turn key package.

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[Sig Oris]

Does anyone have experience with this kit. Either S550 or S650 experience? Positive or negative. Both short and long term. I have watched a few videos on installs and it shows to work, but no one comes back and talks about the experience 6 months or a year later.

I'm running an E85 tune and would like to monitor it when

• I fill up to see the blend % of E in the tank
• When going back to a 93 tune and if I'm below E30.
• Winter vs Summer when mixing

Ford S650 Mustang Bluetooth Flex Fuel Kit for 2024+ Gen 7 5.0L

I thought about just doing a BT sensor through my OBDII, but I want a more complete turn key package.

So once one knows the exact ethanol contents, then what?

Not asking to be a Richard Cranium, just curious as I love gadgets.

 

[Junkyard Dog]

I think he just wants to know how much is in it so he can have it at the level he wants for the tune he is running regardless of how variable the pump ethanol content is.

 

[Mr.CarbonG]

I installed it last year on my 2025 GT. Great Kit, I have had zero issues. I utilise the kit to run an E30->E70 mix.

 

[Junkyard Dog]

Is this so that you can get your mixture exact for the tune you are running?

 

[Mr.CarbonG]

Exactly. You know the mixture is correct for the particular tune you are using.

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