2 XDL Logs and adx attached. Many strange things going on. Overall I think the tune is a bit on the rich side but I am okay with that for now. Any and all feedback welcome.
1) I am logging knock counts continuously but there is no knock retard. I don’t hear anything. Could be I don’t know what knock sounds like.
2) Engine seems to be heat soaked after driving for more than ~35 minutes. Once it gets heat soaked it never passes 230 but also never drops below 215.
3) Every now and then the computer blips.
4) Block learn cells jumping
1) Logging knock counts continuously but no knock retard: I have seen this in other posts but no resolution was given. I get knock counts continuously showing up on the dashboards and in the logs but I never see any knock retard. Log 18 shows counts continuously at 268 and log 18-1 shows the counts continuously at 156. I don’t hear anything. Could be I don’t know what knock sounds like.
2) Overheating stuff: I drilled 3 holes at 3/16" diameter in my t-stat this morning. I don't have a bypass plug on my water pump (or I could not see it f I do). Anyways drilling holes seemed like the easiest route. Note that it is a 195 stat in the truck. Test drove the truck this afternoon at the hottest part of the day. Took a lot longer to reach operating temp (maybe 10 mins?) so I know the holes had an impact. I still ended up getting to 225 before my drive was over. It seems like after 35-40 minutes of driving the engine is heat soaked and cooling can’t keep up. Laptop battery died so unfortunately this heat soak is not reflected in the logs.
3) Computer blips: If you export the 18-1.xdl log and look at rows 30, 31, and 2134, 2135 you will see lots of odd stuff. Kind of like the computer blipped. These rows stand out because that are different than all other rows before and after them. Is this common? The following things really jumped out at me:
See rows 30, 31, 2134, 2135. You will immediately notice they are very strange.
Column BS - CPI/PFI Single Fire Flag set to yes (all other rows set to no and this is a scalar right? How can this change?)
Column BO - fuel pump relay failure
Column DF - High Knock Activity Flag set to yes
Column GG - Spark Advance reads 451.8
I have seen these “blips” in pretty much all of my log files since day one. Usually only one or two rows at a time. I just figured this was normal but not it occurs that I should ask the group.
4) Block learn cells jumping and causing some driveability issues: Does anyone have a recommendation for the BLM boundaries (Loc 0x48DD and 0x48E0 in $E6 mask) for MAP and RPM for a vortec headed TBI? I think my block learn cell is fluctuating around a low load sweet spot for my truck. It seems to jump between cell 5 and 6 around 1400 RPM. Check out 8:29 to 8:45 in log 18 as an example.
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