I apologize ahead of time, this is a long one.
Car info first.
2018 Golf R, unironic dp, ic, stage 2 ecu And tcu tune. E20 fuel.
Getting on the parkway today. In right lane, traffic was slow. Had an open left lane, so I merged left and got after it. Started at 50ish mph. At around 80ish (I think, wasn't really paying attention, was watching traffic in right lane), things went south fast. Car fell flat on its face, EPC and CIL came on, CIL was flashing. Car barely running and shuttering. I pull off on the next exit and limped it to a parking lot. Placed car in park and let it idle for just a few seconds. Violently shaking and spluttering. I shut the car off and pop the hood. No leaks, no rod hanging out of the block, everything looked normal. Checked fluids, all is in normal operating levels. At this point I remember my obd11 in the glove box. Run a full scan. There is some bs leftover faults from a month or 2 ago, but the ones from today scared the s*** out of me.
Hide cylinder P130a00
Cylinder 1, cylinder 2, cylinder 3, and cylinder 4 misfire.
Random/ multiple cylinder misfire.
I do not clear the codes and download the log. The log shows no active faults. So I start the car and there is no epc and cil. Car purs like a kitten. I'm at a loss. Drove the car the 100 miles home with no problems. I get home and re scan the car to look closer at the codes. Attached is all the info I could pull.