how-to: Log AFR from the LC-1 w/o a serial cable
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
I hope the voltage offset doesn't change during engine operation - ie I hope its static!
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
Last edited by tephra; Apr 14, 2008 at 12:59 AM.
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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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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.
0.03137*x+9.05
So I added an offset of 0.05 AFR. I could add another 0.05 AFR offset.
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,
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,
Last edited by BarryC; Apr 16, 2008 at 01:17 PM.
Thread Starter
EvoM Guru
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From: Tri-Cities, WA // Portland, OR
