Congrats on your score. With a score of 160-170 you can expect a rank of around 3200-4000 which can easily get you an IIT. 

Now all comes down to what branch you would prefer and if you don't have any problem with the new IITS because I feel you will not get CSE, ECE, Mech, Chem in old ones( I m presuming you are a general category candidate . 

Hey there, you will be scoring 160-170 marks in JEE ADVANCED 2019. Sorry to say but at this marks you will not be getting admission in any IIT in Computer Science branch because for that you need a minimum 200 marks. You might get a seat in New IITs like IIT Ropar if the cutoff will be low otherwise there are fewer chances of being getting admission at any IIT.