Hp Tuner help
TECH Enthusiast
Joined: Jan 2012
Posts: 557
Likes: 9
From: Bowling Green KY
It looks to me that it is roaming between 28.5 and 30.5 degrees. What does your Main spark vs Air Mass vs RPM table look like in this operating area? If it ranges between 28 and 31 in the area of operation of your log, this would be normal as it would interpolate between the values as it moves from one cell to another. This looks pretty normal to me, if you want to keep it dead constant you will need to have the entire table be 1 number, like 30 or such, throught that range it pulls through in terms of g/cyl across the RPM range of your pull. This will let you see a constant number on your log but it probably won't run any better.
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on the LS1's half a degree gets lost on the conversion from the raw spark variable inside the code to the PID variable used for scanning, with that said you might consider logging burst knock retard and seeing that your o2 readings & trim readings aren't showing any useful data you might consider deleting them, this should help getting a faster frame rate as well.
