Proof that 87 Octane fuel is limiting your 3.6

[bmpcamry09]

I am not seeing the 13.8. I am seeing 14.7 all day no matter if you are trying to climb a hill or go to grandma's. I have gigs of data logs at 14.7. Once a machine is changed over to accelerate with and AFR of 13:1 or 12.X:1 most people are pretty pumped, then you adjust timing and their hair if they have ot blows back. I was doing calibrations before ethanol in your fuel was common and I am pretty smitten with SAE units to.

14.7 is only possible with E0 fuel. 14.1 is the standard if you tune in AFR.

Can you post up some screenshots of your logs? If you use HP Tuners you know that AFR isn’t even the calculation used in the tuning itself.

I wonder why your data is different than mine. If you have E0 fuel it makes sense.

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[bmpcamry09]

I’ve tuned 40 of these in the past three months of all year ranges and I’ve only seen FAR’s within the tune itself of .0720 which translated to AFR is 13.8. If you’re seeing 14.7 I would love to see that data and see why the ones you work on are so much different.

 

[bmpcamry09]

If you are logging your vehicle with some kind of generic PID that references lambda or commanded EQ with a value of 1.0, your device could be converting that to 14.7 on your logger. Which would make more sense.

 

[DAVECS2]

I used to tune quite a few, but things are slower now as I am not an owner any longer and never was hip on making a business out of it. I recommend customers buy the AEMX OBD2 WB02 and have it installed after the y pipe and use the 12V AUX in the dash to power it.

 

[bmpcamry09]

I used to tune quite a few, but things are slower now as I am not an owner any longer and never was hip on making a business out of it. I recommend customers buy the AEMX OBD2 WB02 and have it installed after the y pipe and use the 12V AUX in the dash to power it.

Ahhh I see. Yeah commanded AFR. Old school.

If it’s anything like the EQ commanded it actually requires a Mopar math formula using FA Desired and FA enrichment as multipliers to get the true value. I don’t have the math handy as I’m riding rides at Busch Gardens with the family on vacation at the moment. Lol

You should only truly see 14.7 end reading at your wideband with E0 fuel. I keep my Ballenger in Lambda though since I’m experimenting with ethanol blends.

 

[DAVECS2]

EQ from the WB02 is up above. The commanded AFR is a calculated channel I built off of airflow and injector mass and timing commanded.

 

[Glaados]

The unlock is the same across the board. You won’t need it. You would just need the HP Tuners MPVI and the credits.

Livernois uses a proprietary flasher, so if you were to do a “read” of your Livernois tune, it would probably be encrypted or throw a checksum error. If it wasn’t, then I could build on it or you could flash back to stock and I’d give you my stuff. I’ve never seen their Jeep files. I imagine I do more in my file than they do considering I completely rescale the variable cam tables, eliminate the high lift system, and fully tune the trans. Does Livernois tune the transmission too? Those guys know what their doing, so their final product is likely similar to mine, but I’m sure it’s not 1:1.

It does have a TCM tune in it from them as well. I did have to send in the ECU, and the tabs are worn so i assumed it was cracked open. There was no remote unlock, the only remote was plugging in the device they sent and pulling my stock files for them to use.

The one thing I cant live without though is full flex fuel now. I can add any mix of e85 and gasoline and all i need to do is stay out of the pedal for a few minutes while it relearns and then Im good to drive as usual. Are your tunes set up that way? Is the removal of the high lift system to aid in hopefully not eating the cams or for power gains? Thanks for the knowledge you drop in these threads, would love to have more then one workable option, since my wife may be getting a wrangler sometime soon, and i cant stop tinkering with mine.

 

[bmpcamry09]

It does have a TCM tune in it from them as well. I did have to send in the ECU, and the tabs are worn so i assumed it was cracked open. There was no remote unlock, the only remote was plugging in the device they sent and pulling my stock files for them to use.

The one thing I cant live without though is full flex fuel now. I can add any mix of e85 and gasoline and all i need to do is stay out of the pedal for a few minutes while it relearns and then Im good to drive as usual. Are your tunes set up that way? Is the removal of the high lift system to aid in hopefully not eating the cams or for power gains? Thanks for the knowledge you drop in these threads, would love to have more then one workable option, since my wife may be getting a wrangler sometime soon, and i cant stop tinkering with mine.

I haven’t played with e85 yet but these appear to have full e85 capability out of the box just a single button needs to be clicked to make it that way. All the spark tables and o2 sensor monitors are defined and in place. I plan on testing the E85 side soon.

 

[bmpcamry09]

EQ from the WB02 is up above. The commanded AFR is a calculated channel I built off of airflow and injector mass and timing commanded.

Nice! The formula I use to get EQ commanded to display properly is:

-Stoich FA value from the tune itself (usually .0720) divided by FA Desired + FA Enrichment.

Seems to be the most reliable for tuning by lambda. The cool thing is that FA stoich value from the tune can varry based on ethanol content, so getting these to be flex fuel is literally just a few clicks of a few scalars and its good to go. Testing that fully soon.

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