2001 bmw 330i timing system, is there a easy way around ? i am having about 7 code

after replacing head gasket , i put everything back set timing mark on all , but i keep geting code about 7 of them, anyone with on answer or some input

Bigger cams and a tune? lol

List the codes so I can see how their correlation. Did you bolt the head on to the right torque setting? If it loosened and you’re getting blowby I can imagine that throwing some codes. Any other issues like misfire, worse mpg, slower acceleration, noises, smells, smoke?