Custom Exhaust Installation: Time, Costs & Practical Tips

Thinking about swapping your stock muffler for a performance exhaust? Most people wonder how many hours the job really takes. The answer isn’t a one‑size‑fits‑all – it depends on the car, the exhaust type, and whether you’re doing it yourself or dropping it at a shop.

Typical Time Frames for a Custom Exhaust Fit

If you hand the job to a professional, expect about 1.5 to 3 hours. Simple bolt‑on systems on a front‑wheel‑drive car can be done in under two hours, while a full‑cat‑back swap on a rear‑wheel‑drive model might stretch to three. The extra time usually comes from removing the old system, checking for fit‑issues, and making any needed adjustments.

DIYers should budget a bit more. First‑timer projects often run 3 to 5 hours. You’ll spend extra time gathering tools, loosening stubborn bolts, and double‑checking that clamps line up correctly. Having a friend help lift the car and pass tools can shave off half an hour or more.

Steps That Affect How Long the Job Takes

1. Getting the car ready. Raising the vehicle on jack stands and removing the wheels takes about 15‑20 minutes. Make sure the stands are secure – a wobble can waste time later.

2. Removing the old exhaust. Older cars often have rusted bolts. A penetrating spray and a good ratchet can speed things up, but if the bolts are seized you might need a breaker bar, which adds time.

3. Checking the new system. Before you bolt anything in, line up the new pipes and hangers. If the fit is perfect, you’ll bolt it together in minutes. If not, you may need a short piece of exhaust pipe or an adapter, which means a quick stop at the hardware store.

4. Final torquing and leak check. Tighten all bolts to the manufacturer’s specs (usually around 30 Nm) and then rev the engine to listen for leaks. A quick visual check under the car seals the job.

Overall, the hardest part is the unknowns: rust, tight spaces, and making sure you have the right hangers. If you’re prepared for those, the timeline drops dramatically.

Remember, a rushed job can lead to rattles, leaks, or even damage to the catalytic converter. Take a short break between steps, re‑align the pipes, and double‑check torque. The few extra minutes you spend now will save you from costly repairs later.

Whether you go to a shop or do it yourself, knowing the typical time frames helps you plan around work and weekend plans. So grab your tools, set a timer, and enjoy the deeper, throatier note that comes with a fresh custom exhaust.