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how-to: Log AFR from the LC-1 w/o a serial cable

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Old Apr 14, 2008, 12:56 AM
  #16  
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I think I am going to change my evoscan formula to:

8.98+(16.99-8.98)*(x+1)/254

This should make it a bit closer, and if anything I prefer it to read leaner than it really is

Code:
LC1	Raw	OldForm	NewForm	ShouldBeRaw	ShouldBeAFR	OldF_Diff	NewF_Diff
5	254	16.96	17.02	255		16.99		0.03		-0.03
4	203	15.36	15.41	204		15.39		0.03		-0.03
2.499	126	12.94	12.99	127.449		12.98		0.05		0.00
1.499	75	11.34	11.38	76.449		11.38		0.05		0.00
1	49	10.52	10.56	51		10.58		0.06		0.03
0.499	24	9.73	9.77	25.449		9.78		0.05		0.01
0	0	8.98	9.01	0		8.98		0.00		-0.03
I hope the voltage offset doesn't change during engine operation - ie I hope its static!

Last edited by tephra; Apr 14, 2008 at 12:59 AM.
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Old Apr 14, 2008, 01:16 AM
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kinda off topic, but, mine is jacked up... the led light isnt on and the gauge stays at 14.9... i tried callibrating it and nothin happens....
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Old Apr 15, 2008, 01:43 PM
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I did some comparitive AFR logging this morning with EvoScan and Logworks. The analog out reading going through the ECU was 0.05 AFR leaner than the value read over the serial cable using Logworks. I'm pretty happy with that.
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Old Apr 15, 2008, 02:25 PM
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using your original formula?
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Old Apr 15, 2008, 02:37 PM
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I'm currently spanning from 9:1 to 17:1 using the analog out. The formula I'm using is:

0.03137*x+9.05

So I added an offset of 0.05 AFR. I could add another 0.05 AFR offset.
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Old Apr 15, 2008, 04:34 PM
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just do me a favour - load up LMProgrammer

17 = 16.99 and 9 = 8.98 on mine..

maybe i'm being pedantic hehe
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Old Apr 15, 2008, 05:08 PM
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Yeah, mine does the same.
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Old Apr 16, 2008, 01:11 PM
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Launch ECUFlash and find the MUT12 address in the MUT table. If the MUT table is not listed, then it will have to be added to your ECUFlash definition file. A thread listing the MUT table definition for most ROMs is *here*. Change MUT12 to 8409. (Again, you'll have to enter it as 0x8409.)


ok what am I missing tried this today, connected LC-1 brown to ADC rear o2 input
flashed the mut table and edited evoscan nothing,
I think its something to do with my rom as it has no rear o2 sensor installed from the factory,
can anybody look at the rom and give me the correct address for the ADC input,
please,
Attached Files
File Type: zip
90550001-original.zip (94.8 KB, 3 views)

Last edited by BarryC; Apr 16, 2008 at 01:17 PM.
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Old Apr 16, 2008, 01:41 PM
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Hey BC,

That only works for tephramod ROMs or ROMs that have my rear O2 sim patch. Is tephra planning a V5 patch for your ROM?
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Old Apr 16, 2008, 01:52 PM
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Originally Posted by mrfred View Post
Hey BC,

That only works for tephramod ROMs or ROMs that have my rear O2 sim patch. Is tephra planning a V5 patch for your ROM?
We already have the V5 patch for that rom
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Old Apr 16, 2008, 02:02 PM
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Originally Posted by mrfred View Post
Hey BC,

That only works for tephramod ROMs or ROMs that have my rear O2 sim patch. Is tephra planning a V5 patch for your ROM?
yeah mrfred as russ said we are running V5 tephra mod
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Old Apr 16, 2008, 02:09 PM
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Originally Posted by cossie1 View Post
We already have the V5 patch for that rom
The rear O2 sim patch would not be needed, so tephra may not have changed the RAM variable for that ADC input. Ask tephra what RAM variable is used for that ADC input. He should be able to find it easily.
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Old Apr 16, 2008, 02:13 PM
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Originally Posted by mrfred View Post
The rear O2 sim patch would not be needed, so tephra may not have changed the RAM variable for that ADC input. Ask tephra what RAM variable is used for that ADC input. He should be able to find it easily.
thought as much cheers mrfred,
now where is tephra
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Old Apr 16, 2008, 02:26 PM
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Originally Posted by BarryC View Post
now where is tephra
In OZ mate
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Old Apr 16, 2008, 04:50 PM
  #30  
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as per pm - 8409 should be fine on 90550001.

baz is going to send me his rom so i can dbl check!
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