CREATE TABLE table_57791 ("Name" TEXT, "Power" TEXT, "Torque" TEXT, "Size" TEXT, "Engine code" TEXT, "0\\u2013100km/h , s" FLOAT, "Top speed" TEXT, "Years" TEXT)

What is the power of the engine with an engine code m44b19?
SELECT "Power" FROM table_57791 WHERE "Engine code" = 'm44b19'
SELECT "Power" FROM "table_57791" WHERE "Engine code" = 'm44b19'