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using wideband to tune??

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Old Jun 15, 2005 | 11:38 PM
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Question using wideband to tune??

for part throttle do i use the % afr error or the actual afr readings to do the adjusting to the ve? also i am following the writeup on hptuners website. is this a good one (how to tune using wideband)? should i change my coomanded to 13 like it says??
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Old Jun 15, 2005 | 11:41 PM
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Wideband Tricks
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Old Jun 16, 2005 | 07:37 AM
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Originally Posted by bmfcamaro
for part throttle do i use the % afr error or the actual afr readings to do the adjusting to the ve? also i am following the writeup on hptuners website. is this a good one (how to tune using wideband)? should i change my coomanded to 13 like it says??
13:1 AFR is recommended because it's safe. You can use whatever AFR you want, just make sure it's a safe one. As far as what to use to correct the VE table, use the % AFR error as it's easier.

HTH,
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Old Jun 16, 2005 | 10:20 AM
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Originally Posted by 405HP_Z06
use the % AFR error as it's easier.
not sure how to use the % error to correct. the afr you do afr/13=ve change right.
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Old Jun 16, 2005 | 02:28 PM
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Originally Posted by bmfcamaro
not sure how to use the % error to correct. the afr you do afr/13=ve change right.
The same copy/paste special when using the LTFT histogram on the VE table. Select the % AFR Error histogram and copy, then paste special > multiply by % on VE table.
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Old Jun 16, 2005 | 03:57 PM
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my afr error is crazy like 10-30's that is a lot to multiply by. 10-30% that is.
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Old Jun 17, 2005 | 10:15 AM
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t t t
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Old Jun 17, 2005 | 10:29 AM
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Originally Posted by bmfcamaro
my afr error is crazy like 10-30's that is a lot to multiply by. 10-30% that is.
What conditions are you seeing that kind of error? Did you turn on DFCO?
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Old Jun 17, 2005 | 11:20 AM
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Originally Posted by bmfcamaro
my afr error is crazy like 10-30's that is a lot to multiply by. 10-30% that is.

Have you verified that your WB display and what HPT is logging is the same AFR? If these are the same, the number is what the number is. Are you trying your best to drive in steady state conditions? Have you verified that you don't have any mechanical issues contributing to the large error %?
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Old Jun 17, 2005 | 04:46 PM
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can i email them to you 405hp_z06 so you can check it out?
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Old Jun 17, 2005 | 06:14 PM
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Originally Posted by bmfcamaro
can i email them to you 405hp_z06 so you can check it out?
Send away and I'll check it out.

z06_pwr@mac.com
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