F.A.S.T. Dual Wideband Log Help

[spedracr93]

What AFR does the FAST display when in Closed Loop...?

( I'm trying to find out what stoich AFR is assumed by the FAST )

Volts Bits Lambda AFR
0 0 0.65 9.555
0.2744 56 0.7 10.29
0.5488 112 0.755 11.098
0.8232 168 0.805 11.833
1.0976 224 0.86 12.642
1.372 280 0.91 13.377
1.6464 336 0.96 14.112
1.9208 392 1.015 14.92
2.1756 444 1.065 15.655
2.45 500 1.12 16.464
2.7244 556 1.17 17.199
2.9988 612 1.22 17.934
3.2732 668 1.275 18.742
3.5476 724 1.325 19.477
3.822 780 1.38 20.286
4.0964 836 1.43 21.021

[spedracr93]

Is FAST listed in the V8 S&T Serial Device Wideband Types...?

Not that I can see

[spedracr93]

This one:


has been superceded, see this calc_pids.txt from the Calc.VET thread, post #1.

Ok, I found that earlier today dated 2011 which is newer than what's posted on the EFI tutorials page, so I was going to go through that one today.

[spedracr93]

Volts Bits Lambda AFR
0 0 0.65 9.555
0.2744 56 0.7 10.29
0.5488 112 0.755 11.098
0.8232 168 0.805 11.833
1.0976 224 0.86 12.642
1.372 280 0.91 13.377
1.6464 336 0.96 14.112
1.9208 392 1.015 14.92
2.1756 444 1.065 15.655
2.45 500 1.12 16.464
2.7244 556 1.17 17.199
2.9988 612 1.22 17.934
3.2732 668 1.275 18.742
3.5476 724 1.325 19.477
3.822 780 1.38 20.286
4.0964 836 1.43 21.021

Ahhh... now I understand what you were asking. From this table, I'm assuming Lambda 1.000 = 14.7 AFR

[joecar]

Yes, we want to use Lambda to avoid all the different assumed values for stoich.