Quote Originally Posted by 90Vette View Post
Does my understanding of the overall tuning process look right to you?
Your tuning plan is good. I usually wait on adjusting the timing table until the BLM's are close. I think +/- 5 BLM's (123 ~ 133) are acceptable. Once the BLM's are close, the timing and other drive-ability issues can be worked out. I usually don't have to adjust DFCO. I generally change one or two drive-ability parameters at a time, after the timing (knock) and fuel tables (BLM's) are close, to avoid headaches. If you have intermediate to advanced Excel skills the attached VE Correction spreadsheet is a very helpful "tool" for BLM tuning. I usually have to "Smooth" adjacent VE cells to get a good tune. ... dave w