S4orce

about a year ago purchased MPT 91 PRX and tow/Haul Tune and got excellent results and now want to run E30 or E50 tune. MPT is sending me a file based on my configuration, no data though on performance numbers yet. I live and work in and around Denver area. based on what fuel is available I plan on mixing 13GL E85 with 10GL of 91 Octane should get me to E51 or so. Anyone have any issues with running E50 on ANY tune yet? What difference in power did you see compared to either 91 Perf tune or 93octane tunes ? I know E50 is the max you can run on these stock f-150's with 3.5EB.

Thanks in advance for your thoughts/comments.

chimmike

Find a local tuner who can do a specific tune for that on your truck.

w00t692

These trucks on HP tuners support flex fuel now and can be enabled. Just use your monitoring device to watch ethanol content so you know if you put too much.

S4orce

Thanks, I will have to fire up the Ngauge and see what options are available for that but If i understand what you are saying is, find a local tuner with HP tuner hardware and thats the better route to go.

w00t692

You need to ask your tuner to enable it FYI. It isn't just "on". It's not a feature on ecoboost trucks but HPtuners has added it and your tuner will need to configure it for you.

chimmike

So there's a system in the ecoboost trucks that HPTuners can configure that 'sense' ethanol content?

w00t692

It's the same logic the 5.0 trucks have. HP tuners have just added the functionality to the ecoboost ECU's and exposed it for us to use.

chimmike

huh. So Ford's been hiding the flex fuel capability and keeping it to the non-ecoboosts? or just basic architecture they configure as needed.

regardless, very cool.

w00t692

Flex fuel is limited by fuel system capacity. They want to keep to specific fuel flow requirements. So the HPFP cam lobe, the pump itself, the lift pump in the fuel tank and the port and direct injector size all factor in to if the truck supports flex fuel or not.

If they ever made an ecoboost that supported flex fuel and they properly implemented increased timing and power when enough ethanol content was added it would be one fast stock ecoboost lol.

S4orce

Maybe that is why Ford doesn't support flex fuel on these eco-boost trucks, cause it would kill their V8 sales... if it hasn't already.