Lund Flex Fuel Tune How Hard Going From E85 To 93 Octane?

[stage3s4]

9.8-10 with e85. I have started logging ethanol content with VCM scanner. Its been a great tuning tool. Not sure if you can do that with SCT.

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[craigsix]

9.8-10 with e85. I have started logging ethanol content with VCM scanner. Its been a great tuning tool. Not sure if you can do that with SCT.[/QUOTEok thanks im at 11.0 rite now i filled up with about a 1/3 tank of 93 and ran it down below half a tank and filled it again. first time it went to 12.0 this time its 11.0. guess i need to run tank to empty then fill it.]

 

[mustang_guy]

Why bother with afr when lambda is far easier...

 

[stage3s4]

Why bother with afr when lambda is far easier...

agreed logging lambda makes it a whole lot easier. Also check your ethanol content if you can.

Also as you switch fuels you have to give the ECU some time to adjust fuel trims. I noticed this during my tuning.

 

[mustang_guy]

agreed logging lambda makes it a whole lot easier. Also check your ethanol content if you can.

Also as you switch fuels you have to give the ECU some time to adjust fuel trims. I noticed this during my tuning.

That's why I shared that video so I didn't have to explain it and people would see that it's far easier. :cheers:

 

[craigsix]

what afr on my cars guage wot with e85? it was 11.7-11.9 on 93.

 

[craigsix]

That's why I shared that video so I didn't have to explain it and people would see that it's far easier. :cheers:

im not a professional tuner so its easier for me to look at my cars guage.

 

[mustang_guy]

what afr on my cars guage wot with e85? it was 11.7-11.9 on 93.

im not a professional tuner so its easier for me to look at my cars guage.

:doh: you aren't supposed to be. Watch your ngauge and just watch for a lambda value 93 or e85. It's way easier. If you watch the video you'd see.

 

[stage3s4]

I don't understand why you cant just log the lambda value. You don't need to be a tuner for that.

 

[Sasuketr]

I m on my 8th tank of 93 octane and finally the computer afr started to read around 13.8 range.

 

[wireeater]

That's a long ass time... I wonder if your sensors are going bad. I can switch between the two back to back and it doesn't take that long to start reading correctly and I don't burn off all my fuels when I switch over.

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