Looking for help with my 6.0 4l80e setup includes a BTR red hot cam with a circle d 3200rpm stall. My truck has been tuned already and been driving great until all of a sudden it started pulling all timing at WOT. The knock sensors are disabled due to the headers hitting the frame when it was getting tuned. The clearance issue has been fixed already but knock sensors are still disabled. My tuner is difficult to get a response from so looking for help elsewhere..25-06-30 10-32-04.hpl
Uploaded file including spark retard and advance channels.
This is useless without the tune.
But base timing is showing to go into single digits and the IAT & Coolant temp modifiers are removing 2*+
Yeah base advance is 1.5 degrees and IAT retard is about the same = 0
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Just saw that it is basically 100% into low octane mode too.
GEN3's work different from gen 4 +
Knock learn factor 1 = high octane 0 equals low.
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My bad here's the tune file.
i'm looking for any guidance on what to look at since it was working perfect for 3 weeks before it started doing this
Originally Posted by cveloz
It's moved into low octane mode.. which means up till this point it must have had excessive spark knock.
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Knock sensors are disconnected and knock level is maxed out on vs rpm vs cyl table..this was done by the tuner. Will it still detect spark knock like this?
So assuming you have a LQ9 and running 87 octane.
Try this and just see if it makes a difference.
What gear ratio do you have?
Its actually a LQ4 running on 91. Its stock ratio I believe 3.58s
I just logged another pull actually with no changes to the tune and it did not pull timing like it has been and knock learn is at 1. I have no idea what changed.
What vehicle is this in?
NEver heard of 3.58s.
1991 c1500 I thought it had 3.73s but according to previous tuner thats what it had per vin
3.58 isnt a normal GM gear. its 3.42s or 3.73s.
I see some skewed numbers in the tune as well.
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