The real question is why are Asians over represented in this field despite the fact that Asians also experience systemic racism and come from various socioeconomic backgrounds?

Look into NYC’s high school exam if you want to see the same problem in another light. Asians are over represented there as well and there’s a fight to make it capped per racial groups.

What happens to Asians when they get pulled over by police?

Fellow unavoidably privileged white man, that absolutely doesn't need further citation. It should be obvious from lived experience to any adult American, whites included.

There is only one other demographic group, other than ours, which doesn't experience systemic racism in America: white women. (For them, it's systemic sexism.)

Getting killed or physically assaulted without cause during routine traffic stops and misdemeanor arrests isn't the only kind of racism. (Although it is clearly worse than, say, being underrepresented at the top levels of management.)

Here's one data point: although Asian Americans are not underrepresented in the workforce, they are underrepresented in management positions. https://hbr.org/2018/05/asian-americans-are-the-least-likely...