Kohli described the DRS as "pretty fair" after the first two Tests against England in Rajkot and Visakhapatnam.
India had for years resisted using the DRS over doubts about its reliability following a frustrating trial run in 2008, despite the nine other Test teams adopting the technology years ago.
But the International Cricket Council recently said it had made upgrades to the technology, prompting India to give it another trial run.
"Ya, am pretty happy with it... I think it is pretty fair for the game," Kohli told reporters on the eve of the third Test in Mohali.
But he added that it was too early to pass final judgement on the technology.
"I think we need to have a bit more patience with that particular aspect... We will analyse over a period of 12 months as to how we have used it," he said.
India's World Cup-winning captain Mahendra Singh Dhoni and batting great Sachin Tendulkar have for years voiced scepticism over the technology.
The DRS comprises three main elements -- a ball-tracking technology known as 'Hawkeye'; a high-audio microphone known as 'snicko', which detects the sound of a ball grazing the bat or gloves; and 'hotspot' thermal imaging which can also determine where a ball makes contact.