With a 70.87 percentile in MHT CET and a Maharashtra state rank of 80422 in the OBC category, aiming for a TFWS (Tuition Fee Waiver Scheme) seat in Computer Science (CS) or Information Technology (IT) can be challenging but not impossible. Based on previous trends, here are some Pune colleges where you might have a chance:

1. Government College of Engineering, Pune (COEP) : While COEP is highly competitive, there may be a slim chance in lower branches or through TFWS if seats are available.

2. Pimpri Chinchwad College of Engineering (PCCOE) : PCCOE is a well-regarded college in Pune that might offer IT or CS seats through TFWS depending on availability.

3. Sinhgad College of Engineering : This college generally has a range of engineering branches and could offer IT or CS through TFWS, though competition is significant.

4. Vishwakarma Institute of Technology (VIT) : VIT Pune might have openings for CS or IT under the TFWS scheme.

5. Dr. D.Y. Patil Institute of Engineering & Technology : This institute is another option where you might find a seat in CS or IT through TFWS.

It's crucial to participate in the counseling process and check the latest cutoffs for these institutions. Verify with each college regarding the availability of TFWS seats for the branches you are interested in.