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Old 11-14-2017, 12:23 PM
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Default Tune

Is there anyway to lean out the fuel curve
for stop and go/low speed driving without
messing up my whole tune ? it really sucks
driving around the city stop and go traffic.
where would i look/change in HPTuners ?
Old 11-14-2017, 02:44 PM
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Originally Posted by turboal1
Is there anyway to lean out the fuel curve
for stop and go/low speed driving without
messing up my whole tune ? it really sucks
driving around the city stop and go traffic.
where would i look/change in HPTuners ?
For me I log STFT and adjust as needed. My stoich AFR is 14.7 and I'm routinely around +- 1-2%.

I'm SD tuned (preferred by me).
Old 11-14-2017, 07:08 PM
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Airflow: VE table, Any particular range of cells, Highlight and multiply by .94
That is equivalent of " Going Down one JET size "
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Old 11-14-2017, 11:28 PM
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Closed loop is just going to bring it back to stoich.

To me it's a pointless things to try and lean out the fueling, run the vehicle at the stoich rating for the fuel you are using.
Old 11-15-2017, 06:20 AM
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What are you trying to do?
Old 11-15-2017, 11:01 AM
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I''m just trying to pick up a few more
MPG city driving. I do a lot of stop and go.
Old 11-15-2017, 06:40 PM
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Better off optimizing your part load spark advance.



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