WE HAVE DEVELOPED AN OPTIMAL PERFORMANCE EXHAUST SYSTEM FOR YOUR NP 200 THAT OPTIMIZES THE EFFICIENCY THROUGHOUT OUT THE REV RANGE. YOU CAN EXPECT BENEFITS IS THE FOLLOWING: POWER (KILOWATT AND TORQUE), FUEL EFFICIENCY, THROTTLE RESPONSE, LOWER EXHAUST GAS TEMPERATURES). AND THE BEST PART IT SOUNDS GREAT, IT SOUND LIKE A DEGRAAF.