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Sporadically seeing CEL, typically on acceleration/load. The apparently typical P0106, P0121, P1101 are the usual cause. I've read others having similar issues and my best guess has been to continue...

I could maybe use the pinout if you've got it nailed down.

Can anyone confirm the L87 / E90 ecm pin configuration?

Is the tune you attached the one you are running after it was first tuned? It is a stock AT4.

I've seen a few places where it was referenced that the load axis is PID 2321 Cyl Airmass... but when I pulled the table, I'm showing Pressure Ratio in the row axis. RPM is still the column axis. I...

My plan was to dial MAF in a bit closer and then decide if i should change the table axis.. but was chasing my tail. Think the ecm was trying to interpolate too much with the curve.
Edited the axis...

Thanks smokeshow. Your insight and knowledge on this forum has helped me a ton. l like to truly understand the why, to improve or avoid chasing ghosts.
I've got another question. I'm working on...

Thanks and good point. I did double check MAP linear and offset. Both were correct for the LT4 MAP I'm running. I re-flashed tune and haven't seen a dtc since.

Seems like i run into a decent...

Thanks for the tip on ECM connector. I'll check it out. Didn't think of checking it before, but pretty sure that would cause the codes and some of the infrequent issues Ive seen.
I'll need to work...

2019 Silverado whipple supercharged 6.2 with a CAI and Cat-back. I didn't have the time last year, so I paid to have it tuned, but it still is not where it needs to be. Checking out recent logs,...

I had a similar thought as well, making more power with the colder and more dense air, in turn exceeding a torque limit and cutting power.
I might be able to get the tune file uploaded at some point

I've been running the Whipple S/C on my '19 6.2 since last March. I've gone through quite a few tunes to get where I'm at. Applicable mods include the Whipple S/C, Cold air intake (GM), CAT back, I...