Conversions

[Chevy366]

I was looking for a way to convert EQ to AFR or vise versa , but did not see a conversion unit for that in the conversion tool , did I miss something ?

[GMPX]

You can change it so it displays certain tables in EQ, Lambda or AFR, it's in the Edit > Properties section.

Cheers,
Ross

[Chevy366]

You can change it so it displays certain tables in EQ, Lambda or AFR, it's in the Edit > Properties section.

Cheers,
Ross
Sorry may have not made it clear what I was asking , if I click Data conversion in Edit>Data conversion then click drop down arrow at the "From" box I do not see AFR or EQ listed there .
Was looking for easier way than switching units each time then having to close the .tun file and reopen each time (wanted to start trying to learn EQ) , say like enter 1.18 in "From" in EQ and would be able to see 'To" AFR value .

Thanks

[Chevy366]

Ok form of a question ,
If I click Data conversion in Edit>Data conversion then click drop down arrow at the "From" box I do not see AFR or EQ listed there .
Was looking for easier way than switching units each time then having to close the .tun file and reopen each time (wanted to start trying to learn EQ) , say like enter 1.18 in "From" in EQ and would be able to see 'To" AFR value .
It that something that might be added ?

[5.7ute]

Since an EQ of 1.0 is stoichometric for all fuels whereas an AFR of 14.7:1 is stoich for gasoline only a conversion table would have to ask also what fuel you are running.
Easier to not try & confuse the two.

[wait4me]

Since an EQ of 1.0 is stoichometric for all fuels whereas an AFR of 14.7:1 is stoich for gasoline only a conversion table would have to ask also what fuel you are running.
Easier to not try & confuse the two.



The pcm is using on user input value of what is 1.0 eq. On the later year e38s, ect that value changes from 14.7 based on your alcohol content automatically. B3601 is what the ls1 uses for that value internally. If you change that value in the software, it skews the values in the whole operation of the vehicle. In e38 cars it uses table b3671.

[Chevy366]

Since an EQ of 1.0 is stoichometric for all fuels whereas an AFR of 14.7:1 is stoich for gasoline only a conversion table would have to ask also what fuel you are running.
Easier to not try & confuse the two.
That would be a good Idea , enter EQ value see both Petrol and Diesel AFR like this , 1.0 EQ > 14.7 , 15.3 or AFR 14.7 > EQ 1.0 , 1.10 , first value Petrol second Diesel .

[joecar]

Some petrol OS's come with B3601 set to either of 14.63 or 14.68.

[Chevy366]

Oh , I get it thanks joecar .
14.63 divided by 1.2654 (EQ Ratio) = 11.56156 (AFR) .

[5.7ute]

I have a xls spreadsheet I made to make conversions easier. If you want it give me a yell.

[joecar]

Oh , I get it thanks joecar .
14.63 divided by 1.2654 (EQ Ratio) = 11.56156 (AFR) .Yep, that's how to do it. :cheers:

[joecar]

I log commanded EQIVRATIO instead of commanded AFR;
my calc pids calculate actual EQ instead of actual AFR;
my BEN divides the EQ's;
my tunetool is set to EQ;
I do everything in EQ;

I have a calc pid to convert EQ to AFR for display on the log chart, but it's only for display/sanity checking.

I stay in EQ all the time; after a while you start thinking in EQ instead of AFR.

[gto_in_nc]

Help me get there, joecar? I want to start working in EQ too.

[joecar]

Help me get there, joecar? I want to start working in EQ too.See post #28 of this thread: showthread.php?p=49387#post49387 (http://forum.efilive.com/showthread.php?p=49387#post49387)

Note that my LC-1 is programmed for 0V=AFR11, 5V=AFR16;
you will have to adjust the calc_pids file for your own wideband.

You also have to include these new pids (in place of the old pids) your logging;
You also have to edit your charts/gauges to show these new pids.

[gto_in_nc]

See post #28 of this thread: showthread.php?p=49387#post49387 (http://forum.efilive.com/showthread.php?p=49387#post49387)

Note that my LC-1 is programmed for 0V=AFR11, 5V=AFR16;
you will have to adjust the calc_pids file for your own wideband.

You also have to include these new pids (in place of the old pids) your logging;
You also have to edit your charts/gauges to show these new pids.

Thank you!

[joecar]

Oh, in that calc_pids file, the following is not required, it is there only for "training wheel" convenience:


*CLC-00-010
AFR 10.0 20.0 0.2 "14.63 / {GM.EQIVRATIO}"
EQ 0.5 1.5 0.3 "14.63 / {GM.AFR}"
CALC.AFR F010 CLC-00-010 AFR Fuel "Calculated Commanded AFR"
CALC.EQ F011 CLC-00-010 EQ Fuel "Calculated Commanded EQ"
Edit: the BEN is calculated using commanded EQ and wideband EQ.

[Chevy366]

I have a xls spreadsheet I made to make conversions easier. If you want it give me a yell.
Yell , can you post it up or is it something you don't want everyone having ?

Thanks

[5.7ute]

Here is the spreadsheet. I havent finished it as there are a few things I want to add to it as I go and it needs some tidying up.

[Chevy366]

Here is the spreadsheet. I havent finished it as there are a few things I want to add to it as I go and it needs some tidying up.
Cool , thanks .
Your probably going to have to send me instructions on how to use the Spreadsheet .

[gto_in_nc]

I have neither {B3601} or {B3647} with my stock OS. What are they?

[Chevy366]

I have neither {B3601} or {B3647} with my stock OS. What are they?
[B3601] was in 99-02 PCMs where you had to enter a value for Stioch , [B3647] is in the custom OS , it replaces [B3605] instead of ECT>MAP kPa it gives you ([B3647]) RPM>kPa so you can command whatever value for AFR (so the theory goes) .