Hello,

No,IITs do not give admission on the basis of jee mains exam.

Sorry for your inconvenience but he might be referring to IIITs,yes you can get CSE/ECE in new IIITs and have good chance in North eastern NITs(but other branches)

Alternatively you can participate in your home state councelling where you have better chance.

Also since you have one more chance(if applied) to take jee mains entrance exams where if you can increase your percentile can get much better colleges.

Hope that helps;