So I've been using the K00C tune with the MAF scaling from Edelbrock for a while, and had no issues. It looks like it's pushing around 225HP (using an ELM scanner and TORQUEPro app.) The downside is that the K00C is it's an older ECUTek program.
Edelbrock was kind enough to send a modified 2019 S10C tune, which I'm now testing out. It has more bells and whistles. Initially the idle was pretty negative (-15 ish) but seems to have smoothed out. It had some hesitation during moderate acceleration but again that seems to be smoothing out as well. I'll keep updating as I go along.
https://datazap.me/u/snowtaipan/s10c-logs?log=1&data=2
I'm also going to update the original post as "Fixed" since the issue was clearly the tune, now it's just a question of how much better it can get.
Huge thanks to everyone who helped, you guys made a world of difference, and I'm back to shredding tires thanks to y'all.
