First, you’ll want to figure out how much the part(s) you have in mind will cost, whether that’s a specific part, like a muffler or exhaust pipes, or whether you’re planning on replacing your entire exhaust system. Costs can vary on a number of factors like the brand, the quality of the product, the materials used, and unique features.
If you’re having a mechanic take care of your upgrade(s) for you, you’ll want to add on the cost of labor to replace the parts, too.