Can I get into UCI?

I’m currently a junior, and I took 3 APs sophomore year, 5 right now, and going to take 4 next year.
My grades are abysmal, with about half of my grades being Bs (the rest being As)
I got 2300 on my SAT, got >750 on Math II and Biology SATs, and I intend to take quite a few more subject tests to make up for my mediocre grades. I lack extracurriculars (APs keep me busy as it is).

Should I be incredibly concerned about my chances of getting into UCI?

maybe depending on how low of a GPA. but your test scores are incredible. really i think you have a strong shot of getting in. your lack of ecs will hurt
http://talk.collegeconfidential.com/discussion/comment/18030162#Comment_18030162

Here is the Freshman Profile 2014. See how your Stats compare:
http://admission.universityofcalifornia.edu/campuses/irvine/freshman-profile/

At the end of Junior year, calculate your UC GPA: http://rogerhub.com/gpa-calculator-uc/

Your SAT is very competitive. EC’s and essays will help bolster your application but GPA/Test scores are weighed more heavily by UCI.