Custom PID's for different fuels I.E E10 & E85

[WHYTRYZ06]

This is what I have.....

GAS....{EXT.AD1} * 2 + 10

E10.....{EXT.AD1} * 1.923 + 9.614

E85.....{EXT.AD1} * 1.332 + 6.662

STOICH values that I use are as follows

GAS = 14.63

E10 = 14.12

E85 = 9.78

do my PID's look correct based on my stoich values that I use?

[mr.prick]

I'm having DéjÃ* vu :tongue:
You need to give the Lambda output range (min-max) to make a proper expression.

Here's how to create a WBO2 expression:
Maximum Lambda - Minimum Lambda = Lambda Range
(Voltage=Maximum Lambda) - (Voltage=Minimum Lambda) = Voltage Range

(Lambda Range/Voltage Range)=Slope
Minimum Lambda=Intercept

(Volts*Slope)+Intercept=Lambda

For AFR
(Maximum Lambda*Stoich AFR) - (Minimum Lambda*Stoich AFR) = AFR Range
(Voltage=Maximum AFR) - (Voltage=Minimum AFR) = Voltage Range

(AFR Range/Voltage Range)=Slope
Minimum AFR=Intercept

(Volts*Slope)+Intercept=AFR

If you can log Lambda directly (serial connection) things would be much easier.

[WHYTRYZ06]

I'm having DéjÃ* vu :tongue:
You need to give the Lambda output range (min-max) to make a proper expression.

Here's how to create a WBO2 expression:
Maximum Lambda - Minimum Lambda = Lambda Range
(Voltage=Maximum Lambda) - (Voltage=Minimum Lambda) = Voltage Range

(Lambda Range/Voltage Range)=Slope
Minimum Lambda=Intercept

(Volts*Slope)+Intercept=Lambda

For AFR
(Maximum Lambda*Stoich AFR) - (Minimum Lambda*Stoich AFR) = AFR Range
(Voltage=Maximum AFR) - (Voltage=Minimum AFR) = Voltage Range

(AFR Range/Voltage Range)=Slope
Minimum AFR=Intercept

(Volts*Slope)+Intercept=AFR

If you can log Lambda directly (serial connection) things would be much easier.

slow down there buddy, im still a newb at this....im lost now...

[mr.prick]

Ok, ok
Use the spreadsheet in the bottom of my sig.
Fill out everything in column B except the yellow cells, then fill in the value of {B3601}
It is already filled out for the LC-1's factory programmed analog output #2
if you program the LM-1 to the same value you can just fill in {B3601} to volts cell for the new expression.

[WHYTRYZ06]

Ok, ok
Use the spreadsheet in the bottom of my sig.
Fill out everything in column B except the yellow cells, then fill in the value of {B3601}
It is already filled out for the LC-1's factory programmed analog output #2
if you program the LM-1 to the same value you can just fill in {B3601} to volts cell for the new expression.

ok lemme try this...ill still prob mess it up...do u have aol aim by any chance...lol

[WHYTRYZ06]

i tried it but i still dont get it.... way too complicated

the spreadsheet makes no sense to me, u might as well speak chinese...lol

[joecar]

Andy,

Based on the LC-1 being programmed for gas being 14.7, here's what I come up with:

GAS (stoich 14.63): {EXT.AD1} * 1.990 + 9.952
E10 (stoich 14.12): {EXT.AD1} * 1.921 + 9.605
E85 (stoich 9.78): {EXT.AD1} * 1.331 + 6.653

So for example, if the LC-1 was reporting 2.35V those equations would give:
gas AFR = 14.629
E10 AFR = 14.119
E85 AFR = 9.781

[mr.prick]

How about this, you post up the settings you have for the WBO2 and
the value of {B3601} and I will give you the expression.

[joecar]

He wants the wideband driven gauge to match up with what the scantool sees...

[WHYTRYZ06]

How about this, you post up the settings you have for the WBO2 and
the value of {B3601} and I will give you the expression.

sure...

custom setting in the lc1 14.12 afr

it automaticly sets analog 1 and 2 to....

0v=9.59
5v=19.19

1v=9.59
2v=19.19

but can i keep this setting?

analog 1

0v = 10
5v = 20

analog 2

1v = 10
2v = 20

lambda is this no matter what i set the afr to

0v = 0.680
5v = 1.360

1v = 0.680
5v = 1.360

[WHYTRYZ06]

Andy,

Based on the LC-1 being programmed for gas being 14.7, here's what I come up with:

GAS (stoich 14.63): {EXT.AD1} * 1.990 + 9.952
E10 (stoich 14.12): {EXT.AD1} * 1.921 + 9.605
E85 (stoich 9.78): {EXT.AD1} * 1.331 + 6.653

So for example, if the LC-1 was reporting 2.35V those equations would give:
gas AFR = 14.629
E10 AFR = 14.119
E85 AFR = 9.781

close enough joe

so i set the lc1 to 14.7 factory setting and use either pid u listed depending on what fuel i use?

joe what about if i wanna program the lc1 to read 14.12afr, can u redo the pids w/ the lc1 programed to 14.12?

[joecar]

close enough joe

so i set the lc1 to 14.7 factory setting and use either pid u listed depending on what fuel i use?Yes, that is correct.

[WHYTRYZ06]

Yes, that is correct.

nevermind my last comment, ill just leave it at 14.7, what u think or go to 14.12?

if i leave the setting at 14.7 should i change my calc.pid file to these new pids?

i want ur opinion....

[joecar]

If you leave the LC-1 at 14.7 then your gauge reads the correct AFR for the fuels you mentioned, is that what you see...?

If you leave the LC-1 at 14.7 then just use the calc pid for the fuel you're using... this is simpler than reprogramming the LC-1 every time.

[WHYTRYZ06]

If you leave the LC-1 at 14.7 then your gauge reads the correct AFR for the fuels you mentioned, is that what you see...?

If you leave the LC-1 at 14.7 then just use the calc pid for the fuel you're using... this is simpler than reprogramming the LC-1 every time.

cool

thanks