Gangjee, trying to find his way back into the Asian Tour after missing his card in Web.Com Tour, moved into the top-10 at tied ninth.
At 144 he was par for two rounds and only two shots behind the foursome leading the field at two-under in a low-scoring event at the Wack Wack course, which is proving to be tough for scoring.
Gangjee was one of the four Indians to make the cut, with Abhinav Lohan riding a birdie spree of four in a row from 15th to 18th. He carded 71 and totalled three-over 147 in tied 29th place. Sujjan Singh rallied from a first round 79 to card 71 in second and at six-over, he was tied 53rd.
He is tied 64th at seven-over. Missing the cut were Chiragh Kumar (72-78) and Ajeetesh Sandhu (76-81).
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Chinese Taipei star Lin Wen-tang (73) was tied with Thai duo Thammanoon Sriroj (69) and Kwanchai Tannin (71) and Australia's Matt Jager (72) on two-under-par 142 after a blustery day.
Gangjee said, "I'm extremely happy. This golf course can get to you so you need to relax, stay calm and call upon all your experience so that you can prevail.
He added, "My hitting has been good for the last couple of years. I have no complains at all. The putting is much better now. I've been working on my rhythm and stroke. In fact, Ashok Kumar was helping me last week and he has done a good job. My putter has been going a little bit out so I've been working on getting it a little bit squarer on the plane.