Cost of Lund E85 Tunes

[D K]

Yes, its true, it 'does' work, but thats a stock engine with a 'ton' of reserve in the tune.

For a proper race engine *I* would want the Ethanol sensor and use the 0-5V input to control fuel and timing

Obviously the Ford flex logic works or you would see thousands of Fords with blown engines.

My F150 is factory flex and does not have a fuel sensor.

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[K4fxd]

If I had a true race engine I'd program the stoich for the fuel I was using and send it.

Which is what the tuners do for dedicated E85 tunes.

 

[WildHorse]

If I had a true race engine I'd program the stoich for the fuel I was using and send it.

Race fuels I use tend to have the same stoich & density as the pump 94 I use.

 

[IconicFiveOh]

Yes, its true, it 'does' work, but thats a stock engine with a 'ton' of reserve in the tune.

For a proper race engine *I* would want the Ethanol sensor and use the 0-5V input to control fuel and timing

Seems like you are moving your goal posts talking about "race engines", buddy.

FI is a different animal. Lund will not even provide a FF tune for FI, only E85.

It works great on n/a engines. It's made by and used by Ford. If there were issues, thousands of people would have popped motors considering it's the best bang for your buck mod and widely used.

You simply don't know what you are talking about.

 

[WildHorse]

For a proper race engine *I* would want the Ethanol sensor and use the 0-5V input to control fuel and timing

You don't run a proper race engine on a flex tune. You use a dedicated E85 tune. Then you either test the pump E85 quality, or buy it by the pail/drum. Flex is a convenience tune, that's it. I run a dedicated 94 tune, and when I add race fuel with similar density/stoich, timing goes up, up, & up.

 

[D K]

Not by ‘design’....

Im just looking for info, thats all.

Seems like you are moving your goal posts talking about "race engines", buddy.

 

[IconicFiveOh]

Not by ‘design’....

Im just looking for info, thats all.

The straight answer would be that FF or E85 is by far the best bang for your buck mod, especially with the Gen 3. N/A though.

FF is proven out and I just don't want anyone dissuaded from running it. For a convenience standpoint, that's what it is intended for with street cars/dailies.

Lund, for instance, has their FF tune hit almost the same peak timing as the E85 based on ethanol content. It adjusts based on knock and has a slower ramp for timing.

When you get into FI, that's when things can go boom easily. I know people have plenty but I wouldn't be comfortable running FF even with a sensor in this instance.

If you have 20k+ in a motor would you want to risk it? I wouldn't. At that point you need to either have quality E85 at the pump or buy it in drums.

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