Siddhant Bapat installed a hydrogen cell, water reservoir, and bubbler in his car to produce hydrogen gas (HHO) from water to improve fuel efficiency. The hydrogen gas is injected into the air intake before the turbo to supplement the oxygen for combustion. This reduces the amount of diesel needed per liter of fuel, increasing mileage. Siddhant is still working on installing a device to modify the computer to compute the appropriate amounts of diesel and hydrogen gas for complete combustion. The project is in its final stage.