So I also ordered a new oem oil pressure sensor. I will install tomorrow and I will see what happens. I will remove the oil filter relocation kit because it is leaking and can therefore are such fluctuations on the guage. Today, the guage runs OK but when I added gas sharply again started freaking - show 4 bar and go down to 1 - 0 bar and again go up for 3 - 2 bar and so all the time.