Dear applicant, although a definite cutoff marks cannot be predicted like that, but based on as assumption of rank there is a general perspective that if your choice of stream is Computer Science Engineering then you have to secure a rank within first 5000 in KIITEE to confirm a seat, because they keep the cut off of CSE higher than few other branches. Go through the link to know more,

https://university.careers360.com/articles/kiitee-cutoff

Good luck!!!