How to engage open loop in HP Tuner?
09-18-2004, 09:15 AM
#2
I guess this seems to be a good thread to ask a related question.
Is there any way on the GM computer to tell the computer if you move the o2 sensors farther from the original location. I know on the ford stuff you can adjust the 02 sensor delay when doing longtubes. And if you can do it on the GM computers, does anybody give you access to those tables?
Ryan (98 owner)
Is there any way on the GM computer to tell the computer if you move the o2 sensors farther from the original location. I know on the ford stuff you can adjust the 02 sensor delay when doing longtubes. And if you can do it on the GM computers, does anybody give you access to those tables?
Ryan (98 owner)
09-19-2004, 10:50 AM
#3
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I believe the Engine>Fuel Control>Open and Closed Loop
Fueling>O2 Rich/Lean vs Airflow might be the way to go;
it represents the O2 stoich voltage vs the amount of gas
flow (intake, but exhaust is correlated) and that relates
to how well your remote sensors are being heated. You
may also want to massage the airflow mode vs flow table
to make it meaningful across the closed loop range, as
stock it is all crowded to the very low end (I guess the
stock logs only cool below usefulness, at very low flows)
but headers will cool you off out to higher gas flows.
Fueling>O2 Rich/Lean vs Airflow might be the way to go;
it represents the O2 stoich voltage vs the amount of gas
flow (intake, but exhaust is correlated) and that relates
to how well your remote sensors are being heated. You
may also want to massage the airflow mode vs flow table
to make it meaningful across the closed loop range, as
stock it is all crowded to the very low end (I guess the
stock logs only cool below usefulness, at very low flows)
but headers will cool you off out to higher gas flows.
