Tuning for E10

[WHYTRYZ06]

In the LC-1 User Manual, it says (in the chapter on programming using LM Programmer software):

"On this page you can see the software version of the LC-1 and you can change the multiplier to
calculate AFR from Lambda. A number of different multipliers are already pre-selectable but you
can change it to a custom one for the particular fuel you are using."


So I was under the impression that the AFR you entered here was for the display of the AFR in the LM Programmer software...


For example:

if the LC-1 is programmed for (stoich being 14.7): AFR = 2*v + 10
then lambda = AFR/14.7 = (2/14.7)*v + (10/14.7) = 0.1361*v + 0.6803

Then to get AFR for another fuel, lambda is multiplied by the stoich AFR for that fuel...

So did I mis-interpret the purpose of the AFR you program into the LC-1 via LM Programmer...?

umm, idk u got me... u know how i come to learn things...now what? did ur calculation come out wrong? what should i program the lc1 to? and what pid to use?

[joecar]

umm, idk u got me... u know how i come to learn things...now what? did ur calculation come out wrong?

Andy, no, I was just thinking out loud to see what other people had to say about the LC-1 and LM Programmer.

Go ahead do what 5.7ute said...

[WHYTRYZ06]

Andy, no, I was just thinking out loud to see what other people had to say about the LC-1 and LM Programmer.

Go ahead do what 5.7ute said...

use ur e10 pid and reprogram the lc1 to reaad 14.12 as well as b3601?

[joecar]

Andy, look at this:

The lambda expression from the LC-1 is: lambda = 0.1361*v + 0.6803

stoich 14.70: AFR = lambda * 14.70 = 2*v + 10
stoich 14.63: AFR = lambda * 14.63 = 1.991*v + 9.953
stoich 14.12: AFR = lambda * 14.12 = 1.921*v + 9.606
stoich 9.78: AFR = lambda * 9.78 = 1.331*v + 6.653

which is what I calculated yesterday.

[WHYTRYZ06]

Andy, look at this:

The lambda expression from the LC-1 is: lambda = 0.1361*v + 0.6803

stoich 14.70: AFR = lambda * 14.70 = 2*v + 10
stoich 14.63: AFR = lambda * 14.63 = 1.991*v + 9.953
stoich 14.12: AFR = lambda * 14.12 = 1.921*v + 9.606
stoich 9.78: AFR = lambda * 9.78 = 1.331*v + 6.653

which is what I calculated yesterday.

ok so? what do i do? what ute said recal the lc1 to 14.12 when i use ur e10 pid?

[joecar]

Yes, do like 5.7ute said, program the LC-1 to with 14.12 and use the E10 pid, let's see what it says.

[WHYTRYZ06]

Yes, do like 5.7ute said, program the LC-1 to with 14.12 and use the E10 pid, let's see what it says.

and b3601 to 14.12 as well rite? just for the heck of it... what if i used e85? use the e85 pid and set b3601 to 9.78 and recal the lc1 to 9.78

[joecar]

Yes, set all 3 like this:

1. set b3601 to 14.12afr
2. use joecars custom e10 pid
3. program your lc1 to 14.12 afr.

If you use E85, then set them (1 and 3) to 9.78 and use the E85 pid.

[WHYTRYZ06]

joe one other thing... why does my wb match efilive when i set b3601 to 14.63 and program the lc1 to 14.7 and use the 2 + 10 pid? like i said its so damn close, why tho? any ideas?

[joecar]

joe one other thing... why does my wb match efilive when i set b3601 to 14.63 and program the lc1 to 14.7 and use the 2 + 10 pid? like i said its so damn close, why tho? any ideas?

I don't know yet... but we're about to find out...