Hi Everyone,
Having a couple of issues with my tune on a 1954 Chevy 3100 with a Gen 3 5.3 with single GT45 98mm turbo. Currently set for around 8-10psi of boost.
First issue, any time I get into boost the spark tanks to -10 degrees, which is lowest value it will allow. I can't for the life of me figure out what table is causing it to go that low. I am logging KR and for most instances not seeing any knock. There are instances where I do see slight knock, which i'm assuming means i'm logging the right parameter. The base correction tables are fairly conservative as well. The IAT correction table would pull a couple of degrees, but not 20.
Second issue, I have closed loop and LTFT enabled, but it will not go in to closed loop. Is there a parameter i'm missing that's holding me out?
I appreciate anyone that has a look at my tune and log. Thanks,
Kevin
1954 Chevy 3100 5-3LS Turbo 4L80.hpt
part throttle drive 2.hpl