Can you tell me about the specific group of pilgrims from Madras mentioned in the Shri Sai Satcharita and their experience with Baba?

Certainly. Chapter 29 of the Shri Sai Satcharita recounts the story of a group of devotees from the Madras region. These travelers were on a larger pilgrimage to Kashi and made a stop in Shirdi specifically to have Sai Baba's darshan. The text notes that this group belonged to the Ramdasi sect and they engaged in loving devotional singing with great enthusiasm during their stay. After taking his darshan, they attained peace. In response to their devotion, Baba gave them eight rupees and eight annas, which pleased their minds and served as another example of his compassion for pilgrims.