If you are doing 1600 cal a day, your 400 per scoop is going to bust it.

Yes, 400 is ALMOST the same as natural food, but minus essential stuff like vitamins minerals and most importantly, fiber.

Will your bodyfat increase? Yes, it is as simple as calories in, calories out.

Sell it away or keep for next bulk phase (it usually lasts 2 years, or longer actually if unopened).