This HP vs Nm dyno run performance chart explains how a good or best air intake system and suitable exhaust system can increase your car performance which is your horsepower and torque. The performance figure here is for a 1.6 litre engine before and after fitted with K&N air filter, cold air intake hose, heat shield, extractor, exhaust piping front to rear with bullet. The engine basic modification may increase 10 Nm and 10 horsepower without modifying the internal parts or installing a turbo kit. This will enhance throttle response and car pickup increased. You can do it at any trusted workshop or DIY your air intake system. The cost of basic engine modification may vary with quality of the car performance parts installed. From RM300 for air filter and RM400 for extractor. HOW GOOD AIR INTAKE SYSTEM AND EXHAUST SYSTEM CAN INCREASE CAR ENGINE HORSE POWER AND TORQUE?