Cannot figure out misfire
I have a mk7 GTI 88,000 miles a few months ago I was on a fun ride hit it hard got a number of misfires and epc light came on thought okay time for step colder plugs and new coil packs. Did that intermittent misfires went away drove it easy for a bit but then went for another fun ride and it did the same thing. I know it wasn’t good for my engine but I wiped the codes and tried again. I’m having a mass misfire across multiple cylinders at roughly 5500-6500 rpm’s drives and accelerates like normal before then but then goes into limp mode. I replaced the MAP sensor still having the problem. I even tried taking off my stage 1 tune to see if that was my problem it’s still happening. Only other thing I can think of is possibly fuel injector/fuel pump issue but wouldn’t think those would be bad with somewhat low mileage. If anyone has any ideas that would be greatly appreciated. Engine codes that came up were cylinder 2 and cylinder 4 misfire multiple cylinder misfire hide cylinder and a p0108 which was new and that is Manifold Absolute Pressure (MAP)/Barometric Pressure Circuit High Input. I already replaced MAP sensor so not sure what could be causing this. Thanks in advance