If you have a single exhaust system on your car and are wondering if you can change it to a dual exhaust, the answer is maybe. It depends on a few factors such as the make and model of your vehicle and whether or not your car already has the necessary components for a dual exhaust system. If you have a V6 or V8 engine, chances are that you will be able to convert to a dual exhaust with relative ease. However, if you have a four-cylinder engine, it may be more difficult (but not impossible) to do so. The best way to find out for sure if you can convert your single exhaust to dual is by consulting with a professional mechanic or auto shop.