How much is a full exhaust?
A full exhaust system replacement in the UK typically costs between £600 and £1,200. This is more expensive than just replacing sections like the back box or mid-pipe, which usually cost less. Average Cost of Muffler Replacement Generally, an aftermarket muffler may cost between $50 and $400, although there are plenty of instances where the muffler can be much higher in price. Original equipment (OE) replacement mufflers may cost significantly more – up to $1,000 or more.
Is full exhaust worth it?
Of course, full systems give an awesome noise and look. But what you’re really paying for is performance gains. In some cases, full exhaust systems can shave nearly 20 pounds off the stock numbers. And with the obligatory air-fuel tuning, horsepower improvement can reach 15%. The easiest and most effective way to make your exhaust louder is to swap your stock system for an aftermarket performance exhaust. Factory exhausts are designed to be quiet and efficient, but aftermarket systems are built for sound and power.