Since you actually offered up more for debate than simply, "it is wrong" I will attempt to discuss this with you a little further.
Justin, I know how ECU's work and most of them operate off of very similar logic. Yes they do have their differences, but the manufacturers who make the ECU's don't exactly reinvent the wheel every time they upgrade from a 7.x ECU versus a 7.x.x ECU. I have been recalibrating them for a while now and have a pretty decent handle on what it required to move from one type to another. It isn't an ego thing at all when I say that JHM's tune isn't likely to be the best for my planned mods. If I thought JHM's tune would indeed work well with my planned mods then I would just go with their product because they obviously make a good one, and why reinvent the wheel? However, since I believe that their tune will be running too much spark timing advance for my particular mods, I do not want to chance it; and I love to tinker. Sure, I could rely upon the knock sensors and knock tables to do their thing to keep the engine safe, but the problem with that is it is not proactively handling things. Also, when an ECU retards spark timing due to knock they pretty much always pull way too much as a safety measure, and then slowly add the timing back in after a predetermined decay period. If I relied upon the ECU to just automatically sense knock and retard the timing advance then I would be leaving power on the table where it pulls too much, then decays back to normal, senses knock again, and pulls timing again, thus repeating the process during the WOT pull. That leaves power on the table and also allows knock to occur, which I never like happening in an engine regardless of how quickly the ECU is programmed to eliminate it afterwards. However, if I log the car directly and see at what points the ECU is pulling timing due to knock I can pull it back a little bit in those areas so that it never encounters knock to begin with. This will allow the spark timing advance to remain virtually at a constant maximum safe limit without seesawing back and forth in a knock retard/retard decay pattern.
Justin the term canned tune may be used more often in the domestic tuning market, but I can assure you that not only domestic tuners use that terminology.
The last thing I wanted to do was come on here and toot my own horn. However, when people start blatantly/ignorantly attacking what I have to say, with regards to tuning or anything else of a technical sense on this board, then I feel I am forced to cite the depth of my experience with this stuff so that they know they aren't exactly talking to a newby here. Look at my previous posts and you will notice that the only time I cite that aforementioned experience was only after some ignorant person started making comments along the lines of "you don't know what you are doing", "you will blow your car up", "it cannot be done", etc. If people chose to speak with more than mere blind rhetoric and actually engage in a real and significant technical conversation then I would have responded differently. Unfortunately none have chosen that route thus far. Never have I once claimed that I am the best tuner ever, or even better than JHM when it comes to tuning Audis; but it seems that you guys only hear what you want to hear and see what you want to see, regardless of what is in print in front of you.
My question to you here would be that since you say that the two are so different, what exactly makes them so different according to what you have witnessed while others were tuning your cars for you? It would seem sensible that since you are so adamant about this point that you would be able to cite specific examples of how they are indeed so different.
I posted in this thread because the OP broached a topic that I found interesting and chose to engage with in hopes of not having the peanut gallery come out of the woodworks with their sorely undereducated comments. I am not posting in here to start trouble or otherwise ruffle feathers, but I do take issue when people comment on technical matters saying things like, "you will blow your engine up" without any further technical discussion as to why. Without the explanation of "why" it would seem that their comment exhibits little merit beyond sheer blind ignorance.
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