I have a 5.3 that I turned into a 5.7 with a tow stick style camshaft in my Trailblazer EXT. I use this vehicle 95% of the time for transportation, however I also use it for towing and hammering on once in a while. I currently have the timing tuned to where I have zero knock on regular gas. I simply added some timing until it knocked, then I gradually backed the table down in the areas where I was getting knock until I have none anywhere now. My knock learn factor is usually zero or darn close to it all the time and the thing runs great. However I can definitely run more timing on premium gas and I can feel the difference when I use premium and add in more timing, especially in the lower RPM range that I tow with.
My question is if It is OK to add in more timing so it runs stronger when I put premium in it and just allow the Knock learn factor to adjust the timing when I am running regular or is that a bad idea? Obviously it has to knock in order to adjust the learn factor, I just dont know if this occurs so quickly that it is never going to cause a problem or not. I do not want to tune it so that I need to run premium all the time, stuck in traffic that just isnt doing me any good. Thanks, Roy