Sairam,

After the grand success of the Mookambika Devi Shatha Chandi Maha Yagna performed at Whitefield and Dharmakshetra - the same Yagna would be performed at Sai Prem (Navi Mumbai - the dates of the Yagna will  be announced later)

As per Swami's instructions the Mookambika Devi Shatha Chandi Maha Homam will be performed (along with Dhanwantri and Sudarshan pooja).  

We are talking to the Mookambika temple priests at Ghansoli for more details.

Mother Mookambika is regarded as a manifestation of Shakti, Saraswathi and Mahalakshmi.  

Navi Mumbai is blessed for it has got the famous Mookambika temple at Ghansoli where we had earlier done the Sai Bhajans. It is said that by the power of Mookambika devi people have miraculously escaped, unhurt in the accidents that have happened on the Thane-Belapur belt.  

Swami definitely would have want to bring the significance of this yagna to humanity and as we plan on the yagna, it is important to know the following which I have gathered from the websites. 

Sri Mookambika (Sri Kollur)

This small, ancient, sacred town is about a four-hour bus ride northeast of Mangalore. The sacred Sauparnika River flows through the town.
Located here is a temple dedicated to the goddesses Maha-Lakshmi, Saraswati, and Durga, combined as Mookambika. Sri Devi

Mookambika destroyed the powerful demon Mookasura. There are several other deities in the temple. There is also a temple dedicated to Lord Krishna here.

Mythology:

Long ago when a demon called Kaumasura obtained a boon from Lord Shiva was reigning pompously, Kodachadri became the hiding place for all the gods and divine beings who became helpless against his harassment.

While the Saptarishis were engaged in prayers and poojas to bring about the end of demon kaumasura, Guru Shukracharya enlightens him about his impending death at the hands of a woman. Learning this, kaumasura performs an austere penance to please Lord Shiva. When Lord pleased with his prayers, appears before him and asks him to name the boon that he wishes, Vagdevi, the Goddess of speech senses that this could lead to a greater devastation and makes him speechless. The dumb Kaumasura then becomes unable to verbalise his wishes and then onwards he is called Mookasura. Soon after, on the request of Kola Rishi, the goddess creates a mystical power by bringing together the individual powers of all the gods who had assembled. This Divine Power wages war on Mookasura and brings about his destruction, thereby granting him salvation. The place where devi killed Mookasura is known as "Marana Katte".

Since that day, the Goddess has resided at this holy place Kollur by the name Mookambika, fulfilling the wishes of all her devotees.

Here resides Sreedevi in the Padmasana posture, of a serene countenance, and with three eyes, bearing always a shankha, a chakra and with a pleasant appearance as the embodiment of mantra to bless the devotees.

Another Mythology is

Sri Devi Mookambika is situated near the hills of Kodachadri. She is the three-in-one from of Mahakali-Mahalakshmi-Mahasaraswati. She is present in the form of a Jyotirlinga, which has a golden line separating the Linga into two halves, representing Shiva and Shakti.
 

The Skanda Purana extols the glory of this holy place. It is a Siddha Kshetra. Even to this day, this place is free from crimes such as robbery due to the living presence of the extremely powerful Goddess. It is said that Shankaracharya reached this place in the night, when the Goddess was roaming around in the ferocious form of Mahachandi. Acharya pleased her with his sweet hymns and then she appeared to him as Mahatripurasundari, the most beautiful one in the three worlds. As per her instructions, the Acharya established a Srichakra in front of the Jyotirlinga. He also established an incredibly beautiful image of Sri Devi as she appeared in front of him.  It is believed that all incarnations of Sri Devi like Mahishamardini, Kaushiki, Mahalakshmi, Bhramari merged into the divine Shiva-Shakti Jyotirlinga after the completion of their missions. Thus the Goddess Mookambika is said to be the congregation of all Gods and Goddesses.

 

Significance Chandi Yaga

Chandi is the mother of the universe. She is considered to be Maha Kali, Maha Lakshmi, and Maha Saraswati combined into one form. She is also known as Devi Durga who manifested from the powers of all the Gods like Brahma, Vishnu, Shiva and Dikpalakas to destroy the demons. According to Markandeya Purana, Chandi is the Yogomaya of Lord Vishnu. She destroyed demons (rakshasaas) like Madhu, Kaitava, Shumbha, Nishumbha, Chanda, Munda, Raktabija, Dhumrakshana and the main demon Mahishasura during the nine days of the Navaratri in the month of Aswayuja. These demons are nothing but the demonic qualities of a human being. Praying to Goddess

Chandi will destroy all these bad qualities in us. The text of the Chandi Purana is known as Saptasati. It consists of seven hundred slokas that describe the battle between Goddess Chandi and the demons. The slokas from the Chandi Puranas are chanted

While performing the Chandi Yaga. Also chanted are other slokas such as the Durga Suktas, Devi Suktas, and Ratri Suktas.

Sai Prem,

Ganesh