If you own a Chevy Tahoe and are looking to enhance its performance and sound, installing a Borla Cat-back exhaust system is an excellent choice. This upgrade not only boosts horsepower but also gives your vehicle a more aggressive sound that can turn heads. In this article, we will guide you through the process of installing a Borla Cat-back exhaust on your Chevy Tahoe, detailing the benefits and the steps involved.

Why Upgrade to a Borla Cat-Back Exhaust?

The Borla name is synonymous with high-quality exhaust systems that deliver real performance gains and distinctive sound. For a full‑size SUV like the Chevrolet Tahoe, a cat‑back exhaust is one of the most effective bolt‑on modifications you can make. Here’s what you can expect.

Horsepower and Torque Gains

Borla engineers their cat‑back systems to reduce backpressure and improve exhaust flow. While every vehicle and setup is different, many Tahoe owners report gains of 10–15 horsepower and a similar bump in torque, especially in the mid‑range where you feel it most during daily driving. The gains are most noticeable when towing or accelerating onto the highway.

Sound Quality – Aggressive or Mellow

One of Borla’s strong suits is offering multiple sound levels within the same vehicle fitment:

  • Borla Touring: A moderate, deep tone with no drone. Ideal for daily drivers who want a sportier sound without being loud.
  • Borla S‑Type: A more aggressive note with a pronounced bark under throttle, but still comfortable for cruising.
  • Borla ATAK: The loudest option, designed for maximum volume and a race‑inspired exhaust note.

All Borla systems are engineered to eliminate drone at highway speeds, so your Tahoe remains pleasant on long trips.

Build Quality and Warranty

Every Borla cat‑back system is made from 304‑grade stainless steel, mandrel‑bent for smooth flow, and is backed by a Million‑Mile Warranty (transferable). The systems use aircraft‑quality T‑304 stainless steel clamps and mufflers that resist corrosion far better than aluminized steel. This makes Borla a lifelong investment for your Tahoe.

Choosing the Right Borla System for Your Tahoe

Before you buy, confirm which system fits your specific model year and trim, as well as your sound preferences.

By Model Year

The Chevy Tahoe has gone through several generations. Borla typically releases separate cat‑back systems for these ranges:

  • 2007–2014 (GMT900): Single or dual rear exit options. Part numbers often include 140111 (dual rear) or 140100 (single).
  • 2015–2020 (K2XX): Systems with larger diameter tubing (3”) to match the 6.2L or 5.3L engines. Look for part 140124 (ATAK) or 140125 (S‑Type).
  • 2021–present (GMT1XX): The newest generation also offers Borla systems with electronic sound management compatibility. Check Borla’s official fitment guide for the latest part numbers.

Always verify with the Borla website or a trusted retailer before ordering.

By Sound Preference

If you want a subtle upgrade, choose Borla Touring. For a noticeably louder exhaust that still respects your neighbors, S‑Type is the sweet spot. If you want to be heard from blocks away and don’t mind interior resonance at high RPMs, go ATAK. Many Tahoe owners on TahoeYukonForum share sound clips to help you decide.

Tools and Preparation

Installing a Borla cat‑back exhaust is a straightforward DIY job, but having the right tools ensures a smooth process. Gather the following:

  • Floor jack and two jack stands (minimum 3‑ton capacity)
  • 3/8” or 1/2” socket set with metric and SAE sockets
  • Combination wrenches (15mm, 13mm, and 18mm are common)
  • Penetrating oil (e.g., WD‑40 Specialist or PB Blaster)
  • Reciprocating saw or angle grinder with metal cutoff wheel (for stubborn OEM exhaust sections)
  • Safety glasses and mechanic’s gloves
  • Rubber mallet (to help align hangers)
  • Torque wrench (to tighten clamps to spec)
  • Borla cat‑back system (inspect kit contents against the included diagram)

Work in a well‑ventilated area. If you have a lift, this job takes about an hour; on jack stands, plan on two to three hours.

Step-by-Step Installation Guide

Follow these steps to install your Borla cat‑back exhaust safely and correctly.

Step 1: Lift and Secure the Vehicle

Park your Tahoe on level ground, chock the front wheels, and engage the parking brake. Jack up the rear of the vehicle until you have enough clearance to work comfortably under the exhaust – typically 18–24 inches. Place jack stands under the frame rails (not the axle) and lower the Tahoe onto them. Verify the vehicle is stable before you crawl underneath.

Step 2: Remove the Stock Exhaust System

The stock exhaust consists of the muffler assembly and tailpipes, connected to the catalytic converter flanges and hangers. Start by spraying penetrating oil on all bolts, nuts, and rubber hanger isolators. Let the oil soak for 5–10 minutes.

Using a socket or wrench, remove the bolts at the cat‑back flange (usually 3 bolts on a 2‑bolt or 3‑bolt connection). Do not cut these unless they are rusted solid – if they snap, you will need to drill out the studs. For stubborn rubber hangers, use a flathead screwdriver to pry the metal rod out of the isolator.

Slide the stock exhaust forward and lower it carefully. If the system is in one long piece (older Tahoes may have a welded section), you may need to cut it with a reciprocating saw to remove it. Always wear safety glasses and cut away from yourself.

Step 3: Mock‑Up the Borla System

Lay out all Borla components underneath the vehicle. Do not tighten any clamps yet. Slide the front pipe onto the catalytic converter flange, then attach the intermediate pipe and muffler, routing through the factory hanger locations. Finally, attach the tailpipe(s) and tips. Adjust the lengths and positions so that everything hangs freely without touching the frame, spare tire, or any suspension components. The exhaust tips should be centered in the bumper cutout and extend about 1 inch outward.

Step 4: Final Installation and Torque

Once you are happy with the fit, begin tightening the clamps. Borla uses band‑type clamps that should be torqued to approximately 35–40 ft‑lb – do not overtighten or you can crush the pipe. Use a torque wrench for consistency. Tighten the hanger rods into the isolators; you may need to use pliers or a rubber mallet to seat them fully.

Check all fasteners one more time, especially the flange bolts. Use anti‑seize compound on the flange bolts to make future removal easier.

Step 5: Check for Leaks and Test Drive

Lower the Tahoe back to the ground. Start the engine and listen for any hissing or rattling sounds. If you suspect a leak at any joint, hold a rag near the connection – exhaust puffing indicates a leak. Shut off the engine, allow it to cool, and retighten the leaking clamp.

Take the Tahoe for a 15‑minute test drive, varying the RPMs and speeds. Listen for drone at highway speed (65–75 mph) and pay attention to any new vibrations. Borla systems should be quiet inside the cabin at cruise. If you experience drone on the Touring or S‑Type, double‑check that the hangers are fully seated and not touching the body.

Post‑Installation Considerations

Break‑In Period

New exhaust systems need a short break‑in period – about 500 miles. During this time, the sound will settle as carbon deposits build up inside the mufflers. You may notice the tone deepens slightly. After the break‑in, retighten all clamps (they can loosen as pipes expand and contract).

Smog and Noise Compliance

Borla cat‑back systems are legal in all 50 states because they do not alter the catalytic converters or O2 sensors. Your Tahoe will still pass emissions testing. However, noise ordinances vary by municipality. If you live in an area with strict sound limits (typically below 95 dB), consider the Touring system over ATAK to avoid tickets.

Conclusion

Installing a Borla Cat-back exhaust on your Chevy Tahoe is a rewarding project that can enhance both performance and sound. With the right tools, a weekend afternoon, and the guidance above, you can enjoy the benefits of increased horsepower, improved throttle response, and a signature exhaust note. Borla’s build quality ensures that your investment will last the lifetime of the vehicle. For more details, refer to the included installation manual or visit Borla’s official support page for your specific part number. Happy wrenching!