How the Borla ATAK Exhaust Transforms Your Tahoe 6.2

The Chevrolet Tahoe with the 6.2L V8 engine is already a powerful full-size SUV, delivering 420 horsepower and 460 lb-ft of torque from the factory. For owners who want to wake up that big V8 and extract more performance, few modifications deliver as much immediate satisfaction as a cat-back exhaust. The Borla ATAK (Acoustically Tuned Applied Kinetics) system is specifically engineered to provide the most aggressive sound in Borla’s lineup, along with meaningful horsepower and torque gains. This guide covers everything you need to know about buying, installing, and living with the Borla ATAK exhaust on your 6.2L Tahoe — including real-world costs, a detailed installation walkthrough, and what performance you can expect.

Whether you plan to tackle the job yourself or have a shop handle it, we’ll help you understand the process, the parts, and the tuning options so you can make an informed decision.

Understanding the Borla ATAK Exhaust System

Borla offers three distinct cat-back exhaust lines for the GMT T1XX platform (2015–present Tahoe, Suburban, Yukon, Escalade with 6.2L): Touring (mild sound, zero drone), S-Type (balanced with a sporty tone), and ATAK (the most aggressive for an aftermarket “open” sound). The ATAK system gets its signature, raw exhaust note from straight-through muffler design and larger-diameter tubing — typically 3 inches from the catalytic converters back compared to the stock 2.75-inch system. It reduces backpressure and allows the 6.2L to breathe more freely, especially at higher RPMs.

The system is constructed from 304 stainless steel (both the tubing and the polished tips) and backed by Borla’s Million-Mile Warranty. It includes mandrel-bent pipes, band clamps, and all necessary hardware. Depending on your Tahoe’s configuration (2WD vs. 4WD, wheelbase, and model year), part numbers vary. For example, the Borla ATAK for a 2021–2024 Tahoe 4WD with the 6.2L is part # 140822. Always confirm fitment using Borla’s online tool or a trusted retailer.

Full Cost Breakdown for Tahoe 6.2 Owners

Total investment for this upgrade typically ranges from $1,200 to $2,200, depending on where you buy, whether you install it yourself, and if you add performance tuning. Here’s a detailed look at each cost category.

Exhaust System Pricing

The Borla ATAK cat-back system for the Tahoe 6.2 generally retails between $1,000 and $1,500. Prices vary by retailer:

  • Direct from Borla – MSRP around $1,400–$1,500, but sales and closeout deals occasionally drop prices.
  • Summit Racing – Often lists Borla ATAK at $1,300–$1,400 with free shipping.
  • Amazon / eBay – Prices range from $1,100 to $1,300; be cautious of unauthorized sellers and verify warranty coverage.
  • Local performance shops – May price match online retailers or offer bundled installation deals.

If you have a Tahoe with factory tow package, make sure you order the correct system that accommodates the trailer hitch. Most Borla ATAK systems for this platform are designed to work with factory hitches, but confirm measurements for aftermarket hitches.

Installation Labor Costs

DIY installation saves $100–$300. Professional installation at a muffler shop or dealership can run from $150 to $400, depending on hourly rates and the shop’s familiarity with aftermarket exhaust systems. Some dealerships will void your warranty if they install the exhaust, but Magnusson-Moss Act protections allow aftermarket parts when properly installed. Many independent shops charge a flat fee of $200–$300 for a cat-back swap.

Additional Parts and Upgrades

While the Borla kit includes most hardware, you may need these extras:

  • New exhaust hangers or isolators (if your stock rubber mounts are worn) – $20–$50
  • Band clamp replacement (if threads strip) – $10–$20
  • Cutting tool (reciprocating saw or angle grinder for stubborn bolts) – $50–$100 if you don’t already own one
  • Anti-seize compound and thread-locker – $10–$15
  • Tip options – ATAK comes with 4-inch polished stainless tips; if you want carbon fiber or black ceramic, add $100–$300

Optional ECU Tuning

To fully unlock the performance gains, many owners pair the Borla ATAK with a custom tune or handheld programmer (e.g., DiabloSport i3, HP Tuners). Tuning adjusts Air/Fuel ratios and ignition timing to take advantage of the reduced backpressure. Expect to pay:

  • Handheld tuner with pre-loaded tunes – $300–$500
  • Custom dyno tune – $400–$800

While the system adds about 8–12 horsepower without tuning, a proper tune can push gains closer to 20–25 horsepower and similar torque improvements. Note that tuning your vehicle’s ECU will void your factory powertrain warranty and may affect emissions compliance — know your local laws.

Installation Process — Step by Step

Replacing the entire cat-back exhaust on a 6.2L Tahoe is a moderate DIY job for someone with basic mechanical skills, a floor jack, and a set of hand tools. Allow 2–3 hours if working alone, 1–2 hours with a helper. Always let the exhaust system cool completely before starting — catalytic converters get extremely hot.

Tools and Preparation

Gather these tools before you begin:

  • Floor jack with two jack stands (rated minimum 3 tons)
  • ½-inch drive socket set (deep sockets for oxygen sensor removal)
  • ½-inch drive breaker bar or torque wrench
  • 15mm, 18mm, 21mm sockets for exhaust bolts
  • Penetrating oil (e.g., PB Blaster, WD-40 Specialist)
  • Rubber mallet
  • Safety glasses, mechanics gloves
  • Digital camera or phone to document factory routing for reference
  • Optional: reciprocating saw with metal-cutting blade (if stock bolts are frozen)

Removing the Stock Exhaussystem

  1. Safety first: Park on level ground, chock the rear wheels, and support the rear frame with jack stands under the frame rails — never rely on the Tahoe’s factory scissor jack.
  2. Disconnect the battery negative terminal (especially important if you plan to unplug oxygen sensors).
  3. Spray all exhaust fasteners with penetrating oil and let soak for 10–15 minutes. Critical points: the flange bolts at the catalytic converter (two 15mm nuts), the hanger bolts, and any clamps on the stock muffler.
  4. Remove the two nuts at the catalytic converter flange. If they are rusted, use a breaker bar. If they snap (common on older vehicles), extract them with a bolt extractor or drill out the studs. Replace with new stainless steel nuts if damaged.
  5. Remove the exhaust hangers. The stock exhaust hangs from rubber isolators. Spray them with silicone lubricant and pry the hangers apart with a large screwdriver or slide-off pliers. You can reuse the rubber isolators if they are in good condition; if cracked, order new ones beforehand.
  6. Lower the entire factory assembly from the rear. You may need to angle the muffler to clear the axle. Have a helper hold the weight. Slide it out from under the vehicle.

Installing the Borla ATAK System

  1. Dry-fit the new system on the ground near the vehicle. Borla systems are typically modular with several sections: connection from converters, an intermediate pipe, the ATAK muffler, and the tailpipe section with tips. Start with the front section attached to the catalytic converter flange, then work backward.
  2. Apply anti-seize compound to all flange bolts to prevent future corrosion and ease removal.
  3. Attach the front pipe to the catalytic converter using the supplied gasket and new hardware. Torque to 35–40 ft-lbs.
  4. Install the ATAK muffler section. Borla uses band clamps — align the muffler so tips sit evenly in the rear bumper cutouts. Do not tighten clamps yet; leave them loose to allow adjustments.
  5. Connect the tailpipe section and adjust tip alignment. The Borla tips should protrude about ½ inch beyond the bumper trim. Center them left/right.
  6. Tighten all band clamps to 45–60 ft-lbs, working from front to back. Ensure the exhaust does not contact the spare tire, frame crossmember, or rear sway bar.
  7. Reconnect the battery if you disconnected it. Lower the vehicle.

Final Checks and Testing

Before starting the engine, visually inspect the entire exhaust path. Confirm that the system does not rub against any body panels, the fuel tank, or the brake lines. Start the engine and let it idle. Check for exhaust leaks at every joint — you’ll hear a ticking or chirping sound if a clamp is loose. Tighten as needed. Take a short test drive (<5 miles) to listen for drone inside the cabin at highway speeds (60–70 mph). The Borla ATAK does produce some interior resonance at lower RPMs; this is normal and considered part of its aggressive character. If you find it objectionable, consider the Borla S-Type which is quieter.

Performance Gains and Sound Character

The Borla ATAK is not just about noise — the engineering delivers real, measurable performance for the 6.2L Tahoe.

Horsepower and Torque Improvements

Independent dyno tests of the Borla ATAK on the L86/L87 6.2L engines show gains of 8–12 horsepower and 10–14 lb-ft of torque at the wheels on a stock, untuned truck. The torque improvement is most noticeable in the 2,500–4,500 RPM range, where the engine feels more responsive to throttle inputs. Combined with a good tune, you can see 20+ horsepower — bringing the Tahoe’s wheel output to around 380–390 horses (versus ~350 stock depending on drivetrain loss).

Weight Savings

The stock exhaust on a 6.2L Tahoe weighs approximately 65–75 pounds with its heavy mufflers and resonator. The Borla ATAK, made from thin-wall 304 stainless, weighs roughly 38–45 pounds — saving 25–30 pounds. This weight sits at the very rear of the vehicle, contributing to better rear suspension response and slightly lower unsprung weight.

Sound Profile

The ATAK system is the loudest in Borla’s lineup and is not for everyone. Here’s what to expect:

  • Cold start: A deep, aggressive bark that settles into a muscular idle. Expect neighbors to notice.
  • Low RPM driving (under 2,000 rpm): There is some interior drone — not overwhelming but present. The exhaust is still quiet enough for normal conversation.
  • Full throttle: The engine emits a clean, vicious roar that turns heads. The 6.2L V8 sounds much larger than stock.
  • Highway cruising: At 70 mph the engine is turning about 1,600–1,700 RPM; the Borla ATAK is notable but not fatiguing for most enthusiasts. It is louder than a typical stock SUV.

If you want a sound that announces your arrival, the ATAK is the right choice. For a daily driver that still retains comfort, the S-Type is often recommended.

Maintenance and Longevity

Borla warranties their stainless exhaust systems against defects and corrosion for the lifetime of the original owner (the Million-Mile Warranty is transferable to subsequent owners for 1 million miles, subject to terms). To keep the system looking and sounding its best:

  • Clean the tips regularly — stainless steel will blue with heat; use a metal polish and non-abrasive pad every few months.
  • Check clamps periodically — the band clamps can loosen over the first few heat cycles; re-torque them after 100 miles.
  • Inspect hangers — if the exhaust sags or vibrates against the chassis, replace worn isolators.
  • Avoid road salt and de-icing chemicals — while 304 stainless is corrosion-resistant, pitting can occur under extreme conditions; a light undercoating or wax on the muffler can help.

Conclusion

The Borla ATAK exhaust is a premium upgrade for the 6.2L Tahoe that delivers a dramatic increase in sound and a modest but meaningful bump in performance. With a total investment of roughly $1,200 to $2,000 including installation and optional tuning, it transforms the driving character of a heavy SUV into something genuinely exciting. The installation is well within reach of a competent DIYer with basic tools, and the system’s stainless steel construction ensures it will outlast the vehicle itself.

For those who want the most aggressive available exhaust note for their Tahoe without sacrificing build quality or durability, the Borla ATAK is the clear choice. Just be prepared for the attention it brings — every cold start will remind you and everyone nearby that you’re piloting a 6.2-liter V8.

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