Im starting with a self tune. If any one has any good starting points im all ears.
Im a little nervous of what the wideband is saying but im not sure its reading correct.
The gauge is bouncing at 17-18, after research i used different setting in the scanner but its still in the high 15s.
6.0 suburban 2500 6l90e
Healthy headers. CIA
LS9 cam, upgraded springs,
GM cnc ported heads.
I cant get MAF EQ graph to populate
Thanks J
Basic log 1.hpl
The tune also.
working tune 3.5.20 last tune in suburban.hpt
Is the wideband gauge matches the reading in the scanner, you are good there.
If you have no cats, then that is not an issue for where the sensor is placed but you'd need to make sure you have zero exhaust leaks before the sensor that could skew the readings.
If the wideband is reporting a leaner mixture than what it commanded, you need to dial in the airflow model to make them match. So the MAF curve and the VVE will need to be fixed.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Weird........So i caught a Goat Rope Garage video on tuning.
I ran it in speed density,open loop for the Ve table.
SMOOTH AS BUTTER! what a difference, no more BLUB BLUB! no stumbling..... perfect!
Doesnt stink to high hell.
All the 02 sensors worked flawlessly, not bouncing all over hell.
And the gauge worked perfect too. no more crazy readings
Will it get as smooth as open loop tuning it?
she is running way off calling for -15.54 on average. 12.6 at idle calling for 14.66
J
Open loop ignores all o2 sensors, so they may be reporting data but the computer is not using it to correct the fueling.
That is why your fueling is all over the place. If you correct the tune in open loop with your wideband and switch back to closed loop fuel control, it should run very well.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
anyone know why my MAF EQ ERR isnt populating the graph? Mass Airflow Sensor
I have maf freq channel
para MAF sensor (freq)
graph column axis copy cntrl v in column
unit %, decimal 2
shading +10-0--10 red green
header cell factor 1 ?
MAF graph solved.
Before I mess with too much.
This is just parked numbers.
Shes consistantly rich, would i go into the tune and do a multi% half on the MAF and VE tables for a safe start
or pick one move some number then relog?
sorry about the basics
Thanks for any help
J3-7.hptLog file 3-7.hpl
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