Add A Muffler is a full-service exhaust shop located in Oklahoma City that handles everything from stock muffler replacement to custom fabrication, performance tuning, and welding work on vehicles ranging from daily drivers to lifted trucks and modified cars.
Add A Muffler occupies a production-focused space in Oklahoma City where the work centers on exhaust systems: installation, repair, custom bending, and welding. The shop does not limit itself to mufflers alone; technicians handle complete exhaust systems from manifold to tailpipe, catalytic converter work, resonators, and performance headers. The operation is equipped to custom-bend stainless steel and mild steel pipe, which allows them to route systems around engine swaps, modified engine bays, or lifted truck frames without ordering pre-made kits. Walk-in customers are common, but the shop also takes appointment requests for larger jobs or fabrication work that requires planning.
Muffler replacement alone typically runs $100 to $300 depending on vehicle and muffler quality, though pricing shifts with material costs. Resonator deletion or removal costs $75 to $150 and is popular with truck owners seeking a louder exhaust note. Full exhaust system work (manifold to exit) ranges from $400 to $1,200 for stock replacements on common vehicles; modified or performance systems often run $800 to $2,500 depending on custom fabrication involved. Custom bending and welding are quoted per job; expect $150 to $300 per hour for fabrication labor on unique routing or engine-bay fitment work.
Catalytic converter replacement or repair costs vary sharply by vehicle and converter type. Standard converters run $200 to $600 installed; high-flow performance converters are $400 to $1,000. The shop can also quote delete pipes (legal only off-road) and test-pipe work for customers pursuing performance gains. Confirm current pricing by phone before arriving, as material costs for steel and stainless stock shift monthly.
Oklahoma City has several muffler and exhaust options. Midas locations across the city offer quick muffler swaps at competitive pricing ($120 to $250 for basic work) and fast turnaround, but they do not custom-fabricate systems and stick to bolt-on parts. Firestone and Discount Tire stores in the metro area handle exhaust repairs and replacements at similar price points to Midas, with the advantage of availability at multiple locations; they are best for straightforward replacements on stock vehicles.
Add A Muffler separates itself on custom fabrication, welding capability, and willingness to tackle modified vehicles. If your truck has a lifted suspension or you are running a non-stock engine, Add A Muffler can fabricate routing that works around your modifications rather than forcing a standard kit to fit. For routine muffler replacement on a standard vehicle, Midas offers faster service and equal cost. For performance work, custom trucks, or exhaust problems tied to modifications, Add A Muffler's in-house fabrication and welding make it the more practical choice in Oklahoma City.
Add A Muffler is the right fit for truck owners, hot rodders, and anyone running a modified or swapped engine who needs exhaust work that reflects those changes. It also serves customers looking for a custom sound or performance gain through exhaust tuning. The shop handles both daily drivers and weekend projects.
It is not the best choice if you need same-day service on a stock vehicle and have no appointment; chain shops like Midas and Firestone often move faster for basic muffler swaps. If you need warranty coverage across multiple locations, a national chain offers that edge.
Call ahead or walk in to describe your vehicle, the work you need, and whether it is stock or modified. If you want a custom exhaust system or complex routing, bring photos of your engine bay or suspension if you have them. The technician will assess fitment, quote labor and parts, and either schedule a job or complete it the same day if it is straightforward. For custom fabrication, allow 2 to 5 business days depending on complexity.
Add A Muffler operates Monday through Friday during standard business hours; call to confirm the exact open and close times and Saturday availability, as these can shift seasonally. Street or lot parking is available at the shop location. The facility is accessible via car; no public transit routing is direct. Bring your vehicle ready to work or plan to wait on-site.
Add A Muffler earns its place in Oklahoma City because it combines routine exhaust service with the fabrication skills needed for the modified truck culture that runs deep in the region.
