What percentages of ethanol is it safe to run on a pump gas tune and vice versa?
Lets say you got your car tuned at 70% ethanol, would it be safe to run 50%? Can the ecu compensate? And let say I had 2 gallons of Ethanol left and need to fill up with pump gas and was left at, lets say 20-25% ethanol, would I be able to run a pump gas tune?
I don't like the idea of having to sit and completely run out the tank. Too stressful.
Thanks

 

Get flex fuel kit. Get flex fuel tuned. Problem with different ethanol %'s solved.

The ECU will compensate.

 

Any issues going to E85 back to 93 pump?

 

Does this exist for evo IX?

 

Any recommendations for a reputable flex fuel kit?

 

Message Tom at TSComptuned for the Fitronic most cost effective flex fuel kit out there, the Link would be next IMO price wise.

 

NVM you have an Evo X.. Im not sure it supports that one

 

Blueflex or Driven Fab (uses innovate unit)

 

To clarify for those that may be looking for this information in laaymans: Blueflex has an app that you can download and sync via bluetooth to the unit for ethanol content readout where as drivenfab as Bryan has stated, uses innovate which is a gauge. You must mount this gauge and provide power to it in order to get an ethanol readout so it can send the appropriate signals to the ECU.