So full disclosure, I was involved in the PGMFI.org project from 2002-2006 (Honda OBD0 and OBD1 reverse engineer specifically) ... ever since then, yeah... I'm a little partial to self tuning options. I also did quite a bit of work on Mitsubishi ECM's (1G DSM's, up to Evo6). The whole spirit of those projects was/is to lift the curtain on that whole market. Honda specifically was on lock down from one vendor (Hondata), and something had to change.
I lack the time/desire to stay up all night and work on that stuff anymore though. On my other vehicle projects (Miata's namely) I use MegaSquirts and I find it itches that scratch.
I have long been frustrated with this problem on European cars in particular.
I figure if I'm going to void a generous power train warranty from VAG, it might as well be me who does it. I mean ... I'm on the hook to pay for any hard parts I grenade at that point anyway
I am not minimizing professional tuners either, I have never been nor claimed to be a tuning savant. Long have I also understood that most people can't (or shouldn't) tune their own vehicles. I just want to have access to the same toys, but that puts us into a minority group. That or you get stuck with half baked solutions or living WinOLS hell. Not sure if you've ever used WinOLS, but good god.... I used that on my W211 Mercedes and talk about an experience.
As the platform ages and the MKVIII's roll out things might change. Or, it might not given at that point we're OLD NEWS