Black Knight wrote: ↑
Sun May 24, 2020 12:56 am
… You do need reasonably good target afrs and ign tables for this to work.
My apologies to @Torslund for veering off in your thread.
Perhaps I didn't word it well. TS and MLV are great, can work really well, and that is not my point. I am saying that it of-course needs to run, but then skip right past "better" and go directly for best. This means not auto-tuning the tables to get it running generally better. Just get it running and warmed (the purpose of the Base Tune), so you can then set idle and test for the correct target Lambdas (actual tuning). You can't begin to adjust priming, cranking, ASE or WUE before that anyway, so just get it done. Once you have the correct
Lambdas for your project (not just "reasonably good"), then let it auto-adjust for you to those best targets that you found by testing.
To recap; tuning is finding the best operation (efficiency, HP, TQ, mileage, etc) for your specific project and fuel. Not "close" or some generic AFR target (14.7 here and 12.5 there) and timing (10° idle and 24° WOT or something), but best, and found by testing. This is the part you'd do later anyway, so just do it right up-front and skip the generic target stuff. Does it make more sense if I say it that way?
Note that adding the step of tuning to general targets is good practice for new tuners, especially if they are not comfortable with the programs, or have not learned the methods or developed the skills necessary to find best timing and Lambdas right away. Confidence is a good thing to develop. In that case, then sure, add the extra step for that practice.