The cost of a complete exhaust system modification typically ranges from RM100 to RM5000, with the specific price depending on the modified components, materials, and brands. For instance, replacing only the decorative tailpipe of the rear section may cost as low as RM5.91, while a stainless steel mid-and-rear section valved exhaust system costs approximately RM253.66 to RM501.42, and a full high-performance exhaust system (including the catalytic converter) may reach up to RM1179.8. Products from international brands or those made of carbon fibre will be more expensive, such as a full exhaust system priced at RM955.64. Before modifying, assess your needs: if only aesthetics are desired, opt for a decorative cover (starting at RM20.1); for performance upgrades, a professional mid-and-rear section (from RM294.95) or a full system is required.