About a week ago I replaced a knock sensor since I was getting a code for it, then a few days later I would have to start the car a couple times to actually get it to run. The following few days it got harder to start the car, then once started it would stumble if boost came on until it got warm and then it ran fine. I stopped using the car for fear that it may crap out pulling into traffic, today I went to try starting it and I cannot get it to run right...The car idles very roughly and then wants to die, if it doesnt die it sounds like a tractor with almost no changre from input from throttle.

I havent gotten any codes and it's really starting to irritate me.

Car information" 2010 Mini Cooper S N14 Engine Stage 2 RPM Tune (for 3 months) All plugs, coils, HPFP, oil, thermostat, waterpump, have been changed in the past 1000 miles Turbo, Lines, and intercooler are 6 months old. I was wondering if it's the eBay hpfp going but my ultra gauge and scanner show that it's getting over 100psi when starting. Any Ideas?
Video of start/running: https://drive.google.com/file/d/1x87...ew?usp=sharing (I tried uploading but its 1.4mb too large and I cant edit it on this PC)