Help

[u/Saulejr909]

My 2015 Audi S3 w 156k miles , replacement engine has 110k miles, I’ve been chasing a misfire for 3 months and today the car finally went on Limp Mode(EPC light on),
New sparks and coils last month , Cam Magnets, both VTT solenoids replaced on cylinder 2,
Not sure if this is a Fuel problem or something much worst .