Stoich AFR?

[Zero4488]

Are you guys changing the stoich afr to 14.7 under the fueling tab or leaving it 14.108? Just curious to see what everyone is doing with these.

[Eric@HPTuners]

It should reflect the actual stoich value of the fuel being used.

[Zero4488]

It should reflect the actual stoich value of the fuel being used.

The whole table reads 14.10840 from 0% to 100%.

[Eric@HPTuners]

If you are using pump gas with 10% ethanol, that would be correct.

[JG99GSX]

question: 08 Lacrosse Super 5.3, E67 ECM I believe, I cant find a specific "Commanded A/F" table anywhere in the cal?

I changed the one labeled Stioch from 14.67 to 14.10 but my Commanded A/F Ratio did not change, it still reads 14.7:1 ?

using HP Tuners and scanning with Torque

[5FDP]

question: 08 Lacrosse Super 5.3, E67 ECM I believe, I cant find a specific "Commanded A/F" table anywhere in the cal?

I changed the one labeled Stioch from 14.67 to 14.10 but my Commanded A/F Ratio did not change, it still reads 14.7:1 ?

using HP Tuners and scanning with Torque

Look at the EQ ratio, take that and divide it by your stoich to give you a commanded afr.

Unless that not what you are asking. Otherwise a wideband won't show you 14.1 exactly, still going to be roughly 14.7ish.

[GXPLS4]

question: 08 Lacrosse Super 5.3, E67 ECM I believe, I cant find a specific "Commanded A/F" table anywhere in the cal?

I changed the one labeled Stioch from 14.67 to 14.10 but my Commanded A/F Ratio did not change, it still reads 14.7:1 ?

using HP Tuners and scanning with Torque

ditch the tourqe readings for commanded a/f verify the fuel youre using actually has 10%Ethanol. Use your hptuners scanner to tell you commanded a/f hi res to see whats going on, make sure you reset your fuel trims as well and see where everything settles.

[JG99GSX]

How do I add the commanded a/f hi res to the scanner? thanks Jeff G

[Bill@HPTuners]

right click-insert pid in the table(primary) display.

[JG99GSX]

thnx Guys