Low e-85 Dyno Numbers

[Poppacapp]

And the car will automatically calculate for that with the Lund ff tune ?

Yep.. the car takes care of it all automatically.

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[West TX GT]

I also just got a flex tune. I'm on my second tank of e85 and ran it down to just a couple miles to empty. I thought it was supposed to richen up but the afr is staying 14.5. When is it supposed to adjust?

 

[Todd15Fastback]

I also just got a flex tune. I'm on my second tank of e85 and ran it down to just a couple miles to empty. I thought it was supposed to richen up but the afr is staying 14.5. When is it supposed to adjust?

It should adjust really quick.

 

[Niz55]

I also just got a flex tune. I'm on my second tank of e85 and ran it down to just a couple miles to empty. I thought it was supposed to richen up but the afr is staying 14.5. When is it supposed to adjust?

14.5 at wot?

 

[Todd15Fastback]

14.5 at wot?

I think he is talking about idle and seeing 9.6-10 for E85 vs. what it was for 93.

 

[West TX GT]

That is exactly what I'm talking about. It is ridiculously hot right now so I haven't floored it. I have gone about 75% from a stand still and while cruising and after fluctuates a little but stays pretty close to 14.5. Am I now running in a lean condition on e85? Alcohol % is reading 75.6

 

[Niz55]

I have a 91 tune and mine is 14 AFR at idle.

 

[Need4Speed15]

I also just got a flex tune. I'm on my second tank of e85 and ran it down to just a couple miles to empty. I thought it was supposed to richen up but the afr is staying 14.5. When is it supposed to adjust?

Make sure you have a flex fuel tune, email Lund to be sure. Something isn't right if you have e85 in the tank and your seeing the same readings as 93. Should adjust after 5-10 mins of normal driving. A/F should be 10.2-10.4 or so at idle with e85 (assuming 100% e85)

 

[Niz55]

Make sure you have a flex fuel tune, email Lund to be sure. Something isn't right if you have e85 in the tank and your seeing the same readings as 93. Should adjust after 5-10 mins of normal driving. A/F should be 10.2-10.4 or so at idle with e85 (assuming 100% e85)

That's is super rich. Is it normal for e85?

 

[West TX GT]

That's what I thought. I didn't want to seem a complete moron when asking them. I'm going to send them an email. Thanks for the info, guys.

 

[West TX GT]

My understanding is that it takes more e85 to ignite as compared to gasoline thus the richer mix and the lower fuel economy.

 

[JAS550]

That's what I thought. I didn't want to seem a complete moron when asking them. I'm going to send them an email. Thanks for the info, guys.

Do you have the Nguage? And if so are you reading AFR off it? From what I understand, once the tune flags for E85 then lambda will adjust to E85 ratios. Check your AFR on the dash, you will see the difference.

 

[TheDivaDanielle]

And the car will automatically calculate for that with the Lund ff tune ?

yes in fact the highest your ngauge will show is like 78% alcohol. It'll get to the last 7% just in fuel trim adjustments.

 

[Need4Speed15]

That's is super rich. Is it normal for e85?

Yep, perfectly normal. E85 takes approx 30% more volume then 93. For straight e85 that's not rich.

 

[West TX GT]

I'll try it tonight.

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