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 ?

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).

Airflow: VE table, Any particular range of cells, Highlight and multiply by .94
That is equivalent of " Going Down one JET size "

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.

What are you trying to do?

Mpg
 

I''m just trying to pick up a few more
MPG city driving. I do a lot of stop and go.

Better off optimizing your part load spark advance.