I've been trying to figure out what I'm overlooking silently now for a couple of weeks. While I tuned my vehicle myself using EBL block learn multiplier, I can't figure out why my tables are not even remotely close to the tables on the bins that are commonly listed for my vehicle.
Can someone direct me to the info?
If it helps, I'm tuning a 1989 C1500 5.7l 2.73 rear gear
I've had similar experiences when I've AFR tuned EBL.
I use an excel spreadsheet to help me "see" what's happening with the EBL VE Table.
The documentation with EBL is better than factory tuning documentation.
Lower AFR.jpg
Upper AFR.jpg
The bins that meet the description for my vehicle won't even crank on mine. The spark tables are so high I have to wonder if the descriptions are missing information on modification. I've read people say that you can run the spark tables higher on these old heads but I can't imagine spark advances of 60-80 when I'm getting a high of about 28-32.
Excel with EBL SA Tables
Lower SA Open Loop.jpg
Upper SA Open Loop.jpg
Those are much closer figures to what I would expect. I'm just not understanding how or why the other bins are so different
Those spark tables make it run great. Thank you. I've read three different opinions on how much I can advance the timing on the stock 193 heads. One person throws them together with several other heads and says 36-38 degrees is acceptable, another person says 25-29 degrees for these heads, and the most conservative I've read says that 24-25 degrees is best for them. I'm unsure which is correct but even if I set all my timing tables to zero degrees within cruising range I still max out my knock count st 255 within five miles. What do you make of that?
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