I apologize if I'm posting too much lately, I'm trying to learn by looking at the differences, and then searching the forums for answers.
I notice that the OS info is different from a FRPP 2 tune I found on a thread in here compared to my stock tune. The FRPP has the OS listed as FPGM05K and my OS is FPGM05K. From what I've seen this is sometimes called the strategy, and Lasota's cookbook kind of went into it. I see that some people said that some OSs are better than others, and some people made it sound like you could change it for 6 credits. I still don't know how that would work because the VIN would be off. Nevertheless, I know that the FRPP kits don't swap the PCM hardware itself, it just uses the procal tool, which seems very similar to flashing like we do, or possibly flashing the firmware that the software we tweak relies upon. Am I understanding this correctly? Maybe some OS's have things that haven't been identified in VCM? I saw one reference to someone saying that they copied all of the values from each table off a FRPP tune to a stock OS and the car didn't run right.
My impetus for the above question is that I notice on all of the FRPP tunes I've found is that the piston rattle table is zereod out, and the per-cylinder knock is enabled instead of the global in mine. I don't want to "enable" something that the underlying firmware doesn't know how to handle the change. Because I don't want to sacrifice performance if it's just a tweak FoMoCo did to quiet harmless piston slap or a knock technique that is outdated. Likewise, since the FRPP tunes use per-cylinder knock, it would seem to me that one could maintain a higher spark advance and just pull timing from the funky cylinder instead of using the funky cylinder as the bounds for knock on the entire bank. I found references from 2017 where it was suggested that per-cylinder spark is a bad idea for a car with 2 knock sensors, but I don't know if the FRPP knock changes were known, and if the posters would have changed their mind if they knew FRPP felt confident enough to use it on a warrantied vehicle.
I know that I can zero out the tables (Thank you Thatwhite5.0), but it's things like that, that have me curious.
I know there are a lot of other tables that are changed related to torque and basically the entire spark section is different, but I think I understand the concepts behind it, so I won't bother y'all about that. As usual, thank you all for your help. Hopefully I can pay it forward in the future. For what it's worth, I'm not aspiring to be a tuner, I just want to learn and tune my car to the best of my ability.