I had the commanded AFR set up on my 2008 denali and it worked fine. Well it was totaled and now I have a 2014 6.2 sierra.
The commanded AFR reads 10.65 and when you get into PE it goes down to 8 something. I haven't touch the engine tuning really yet. I just added a E85 sensor and enabled it in the tune. And set the PE to be commanded sooner.
How do I make it read commanded AFR correctly for this truck. 2-26-19.hpl
What did it read prior to adding flex fuel sensor and enabling it?
Email Tunes, [email protected]
96 TA Blown/Stroked, 4L80E/Fab 9
15 C7 A8 H/C 2.3 Blower/PI
14 Gen 5 Viper
Custom Mid Engine chassis, AKA GalBen C
are you running 93 E10 or are you running E60? Do you have any ethanol in the tank?
8 something at WOT could be correct depending on what you are commanding for PE.
The AFR will follow your stoich table for how much alcohol content. The log shows 71%, so if your stoich table shows around 10.5 afr at 70ish percent alcohol, then it's correct.
This is where using lambda is easier.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
That makes perfect sense. On this truck I never did a log before E85. I used HP tuner to adjust the tires size and put it away. Then when I figured out how to add a E85 sensor for 50 bucks i got my Hp tuner back out. I enabled E85 and added 5 gallons of E85 to see if the alcohol content went up. When it did I filled it all the way and never looked at the Commanded AFR. Now that I have been working on the trans tune. I started paying attention to more things.
I?m getting ready to add headers and a wideband. So I was worried about getting it right before I did that. Now I see why I need to convert it over to lambda. This will be my first time trying to tune with a wideband.
i know about adding the sensor and all, but what all needs to be changed in the file to make e85 work?Originally Posted by Jonblarc7
Here is the video I flowed to enable E85. I also used this same guys idea for adding the E85 sensor on the cheap. It's crazy to pay 350 buck for the sensor when I bought the sensor off Amazon for $35.00 and $15.00 in Russuell fittings. It was a no brainier for me to do it.
https://youtu.be/O_WeWK06zWM
This is the video on adding the sensor
https://youtu.be/ezb58gNGJRk
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