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Author Topic: Wideband Calculation  (Read 6150 times)
vavjettaw36
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« on: September 27, 2016, 02:40:54 PM »

My tuner added the entry wrong in my ECU file for wideband. Anywhere to just recalculate the log to find out the wideband?

Here is the entry he added:

WBAFR           , {wideband AFR}                    , 0x381116,  2,  0x0000, {WBAFR}   , 0, 0,  0.014688064,  -7.35, {logging wideband AFR}

Correct one:

WBAFR           , {wideband AFR}                    , 0x381116,  1,  0x0000, {WBAFR}   , 0, 0,  0.014688064,  -7.35, {logging wideband AFR}


Note the "SIZE" of two.  What is this "SIZE" parameter?  and how can I use it to derive the true AFR value?  I would just go out and simply relog but there is only a window of time I can do it because the traffic/cops.
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nyet
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« Reply #1 on: September 27, 2016, 02:41:39 PM »

8 bit vs 16 bit word (1 byte vs 2 bytes)]

I highly doubt 1 byte is the "correct" one.
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vavjettaw36
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« Reply #2 on: September 27, 2016, 06:42:23 PM »

8 bit vs 16 bit word (1 byte vs 2 bytes)]

I highly doubt 1 byte is the "correct" one.
Sorry you are right. I posted it wrong. 1 is wrong. 2 is right. Anyway to convert a calculated AFR?


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corradovolksb
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« Reply #3 on: September 27, 2016, 07:47:19 PM »

I emailed you about it but it may have not sent. Open the .ecu file and change the size from 1 to 2 and you will be good to go.
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vavjettaw36
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« Reply #4 on: September 27, 2016, 08:18:12 PM »

I emailed you about it but it may have not sent. Open the .ecu file and change the size from 1 to 2 and you will be good to go.

Brad I got it bud. I was more curios as to whether I could convert it...


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nubcake
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« Reply #5 on: September 28, 2016, 02:32:18 AM »

I was more curios as to whether I could convert it...

You can't convert a logged 8-bit value to a 16-bit, since half of the data is missing.
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