1. Schedule Your Appointment
Whether scheduling online or over the phone be sure and let us know what you're experiencing so we can provide fast and accurate service advice.
2. Diagnostics and Inspections
Drop off your vehicle and the shop will get to work with inspections and diagnostics using the same equipment as the manufacturers to determine issues and next steps.
3. Digital Vehicle Inspection Report and Estimate
Following the diagnosis we will text you a digital vehicle inspection report, containing pictures and videos of our findings and recommendations.
4. Review and Approval
A service advisor will reach out to walk you through the findings and recommendations to determine how you would like to proceed, or you can approve work directly in your DVI.
5. Work Performed or Scheduled
Most work can be completed immediately, or scheduled based on parts and customer availability.
Locally Owned, On-Site Accountability, Industry-Leading Warranty
Curtis and Becky Henning own and operate Christian Brothers Automotive Norman and are on-site every day. That means you’re working with the people personally accountable for the quality of your repair.
Every exhaust repair we perform is backed by the Nice Difference® Warranty: 3 years or 36,000 miles, whichever occurs last. We also accept all third-party warranties, so you don’t have to wonder whether your existing coverage applies here.
Christian Brothers Automotive Norman has been ranked #1 in Customer Satisfaction Among Aftermarket Full-Service Maintenance and Repair Providers in the J.D. Power 2025 Aftermarket Service Index (ASI) Study for the sixth consecutive year. For award details, visit jdpower.com/awards. Locally, our shop earned the Norman Transcript Reader’s Choice Award for Best Automotive Repairs in 2016, 2017, 2020, and 2021.
Warning Signs Your Exhaust System Needs Attention
Exhaust problems rarely announce themselves all at once. Catching them early can help limit repair costs and, in the case of leaks, help protect your family. Watch for these warning signs:
- Loud rumbling or increased exhaust noise: especially during acceleration, this often points to a muffler issue or exhaust leak
- Rotten egg or sulfur smell from the tailpipe: a common indicator of a failing catalytic converter
- Check engine light: oxygen sensor failures and catalytic converter problems frequently trigger this warning
- Reduced fuel economy or sluggish acceleration: a damaged or restricted exhaust system disrupts engine back-pressure, affecting both power and efficiency
- Visible rust, holes, or dragging components: physical damage under the vehicle needs prompt attention before it worsens
- Exhaust smell or burning odor inside the cabin: a potential exhaust leak and a carbon monoxide risk that warrants immediate inspection
Exhaust System Components & What They Do
Understanding the system helps you follow what our technicians find during your Digital Vehicle Inspection. Here’s what each major part does:
- Exhaust manifold: collects combustion gases from the engine cylinders and channels them into the exhaust pipe
- Catalytic converter: converts harmful gases including carbon monoxide and nitrogen oxides into less harmful emissions before they exit the tailpipe
- Oxygen sensors: monitor exhaust gas composition and send data to the engine’s computer, directly influencing fuel mixture and efficiency
- Muffler: dampens the sound waves produced by exhaust flow, reducing cabin and road noise
- Tailpipe: directs exhaust gases away from the vehicle; damage or blockage affects the entire system’s function
A properly functioning exhaust system lets gases flow without excessive restriction, supporting both horsepower and fuel efficiency. A compromised system affects performance you can feel every time you drive.
Exhaust Repairs & Oklahoma Emissions Compliance
A functioning catalytic converter and oxygen sensor system are essential to controlling the pollutants your exhaust produces. In Oklahoma, a vehicle that fails an emissions inspection due to exhaust system faults can’t be legally registered until the underlying repair is completed. Restoring catalytic converter and oxygen sensor function is among the most common paths to addressing a failed inspection. Addressing these issues before an inspection rather than after also tends to reduce total repair cost by preventing compounding damage. Our technicians can diagnose what’s actually failing and explain your options clearly before any work begins.
Your Local Christian Brothers Amenities
FAQs
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Q. "Why is smoke coming out of my exhaust system?"You are able to locate the problem based on the color of the smoke. Take a look at this article to identify the potential issue based on the color.
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Q. "How do I tell if my exhaust system is leaking?"If you are experiencing a rumbling engine noise, a decreased fuel economy, or a vibrating gas pedal, this could be a sign that you have an exhaust system leak.
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Q. "How do I tell if something is wrong with my muffler?"Some common signs of muffler issues include: abnormally loud noise, strong fumes, and loss in fuel economy or power.
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Q. "What is the purpose of my vehicle's muffler?"The muffler is responsible for tuning your engine's noise and helps balance fuel efficiency and power. Some like a louder more powerful car, while others prefer a quiet and efficient drive. It is up to your personal preference what type of muffler is best for you. Click here to learn more.
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Q. "Do you offer a warranty?"As part of our Nice difference.® commitment to providing our customers the best auto service experience possible, we also offer a 3-year/36,000-mile warranty on all the work that we do. We offer this warranty at every Christian Brothers Automotive nationwide, and it will be honored at any location, regardless of which branch did the initial work.
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Q. "What is a Digital Vehicle Inspection?"With a complimentary Digital Vehicle Inspection (DVI) on every visit, you’ll see firsthand photos of your vehicle from under the hood. We’ll let you know if everything is functioning properly or if there are any areas of concern. You can even approve or deny our service recommendations, all straight from your smartphone, or you can, of course, give us a call and we’ll explain our findings in further detail.
Have more Questions?
Our friendly auto service experts have the answers.
Call your local Christian Brothers Automotive car shop today
Hear What Our Customers Had to Say About Us
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"I’ve known the current owner for years. Good christian man. His team is EXCELLENT and their work is superior. i would highly RECOMMEND CHRISTIAN brothers automotive Norman to any one that needs auto repair or MAINTENANCE . They beat the Ford dealer b"
- CJ