[kittyboy]

I have flex fuel enabled running 10% and want to dial-in my closed loop MAF Calibration. Will flex fuel enabled reference the "Stoichiometry" table and adjust for a richer air/fuel mix without me having to make any other changes in HP Editor, such as in the "Rich/Lean vs. Airflow" values, etc?..

What I want to understand, will the Hz values I log in HP Scanner reflect the 10% stoichiometry table in HP Editor running 10% flex fuel, and not appear rich in Scanner when trying to tune, possibly causing me to trim out the 10% flex fuel table adjustment in Editor? I am assuming I should log 13.23 at 10%?

What I fear is that the OS may want to maintain 14.7 based on O2 settings and I will be chasing my tail regardless of the stoich flex fuel table values? I am assuming I should log 13.23 running 10%?

 

[Karch]

I have flex fuel enabled running 10% and want to dial-in my closed loop MAF Calibration. Will flex fuel enabled reference the "Stoichiometry" table and adjust for a richer air/fuel mix without me having to make any other changes in HP Editor, such as in the "Rich/Lean vs. Airflow" values, etc?..

What I want to understand, will the Hz values I log in HP Scanner reflect the 10% stoichiometry table in HP Editor running 10% flex fuel, and not appear rich in Scanner when trying to tune, possibly causing me to trim out the 10% flex fuel table adjustment in Editor? I am assuming I should log 13.23 at 10%?

What I fear is that the OS may want to maintain 14.7 based on O2 settings and I will be chasing my tail regardless of the stoich flex fuel table values? I am assuming I should log 13.23 running 10%?

Doesn’t the ECM read basically lambda?


Sent from my iPhone using Tapatalk

 

[kittyboy]

Doesn’t the ECM read basically lambda?


Sent from my iPhone using Tapatalk

Yes, but the stoich table values are not lambda. I just don't want to be logging and trimming out the 10% I assume the OS is adding based on the stoich table at 10%

 

[PGA2B]

Did you post this question on the HP Tuners forum?

GM V8 Tuning - Engine, Gas (Gen 4)

(2005-2015, LS2, LS7, ...)

forum.hptuners.com

 

[kittyboy]

Did you post this question on the HP Tuners forum?

GM V8 Tuning - Engine, Gas (Gen 4)

(2005-2015, LS2, LS7, ...)

forum.hptuners.com

haha, no. I installed a flex sensor couple months back and am unsure if there is any difference tuning closed loop.

 

[Lt1z]

10% will read 14.1

 

[kittyboy]

10% will read 14.1

Is there anything unique I need to know when tuning CL flex fuel enabled?

 

[07GTS]

tune it as per normal, the commanded is lambda 1.0 which is corrected in the stoich for the ethanol % so its all correct, if injectors/data is good then it will be good, as long as the stoich table is set as it should be for petrol to ethanol then when the flex is enabled it will be fine, but if it has been using e10 but not with flex or stoich changed to suit then u will be out that little bit and have to adjust fueling % overall to get back to correct now with the flex