Why Choose Borla for Your Genesis Coupe 2.0T

Borla has built a reputation as a premium exhaust manufacturer, specifically for high‑performance vehicles like the Genesis Coupe 2.0T. Their systems are engineered from T‑304 stainless steel, offering superior corrosion resistance and durability compared to factory aluminized steel. The design focuses on maximizing exhaust flow while delivering a signature aggressive tone without excessive drone. Whether you opt for the Touring (mellow) or S‑Type (more aggressive) version, you gain a bolt‑on upgrade that can add 8–12 horsepower and 10–15 lb‑ft of torque when paired with a tune. The precision‑mandrel bent tubing and aircraft‑quality welding ensure a perfect fit and long‑lasting performance.

Investing in a Borla system also means you get a million‑mile warranty, which speaks to the brand’s confidence in its build quality. For Genesis Coupe owners looking to unlock the 2.0T’s potential, this is often considered the gold standard in aftermarket exhausts.

Borla Exhaust System Overview

Most Borla systems for the Genesis Coupe 2.0T are cat‑back designs, replacing everything from the catalytic converter back. They typically include a mid‑pipe with integrated resonator, a rear axle‑back section with mufflers, and all necessary hardware (clamps, hangers, bolts). Some kits offer a choice between dual‑exit and single‑exit rear valance options. Common part numbers include 14803 (Touring) and 14804 (S‑Type). Verify your vehicle year (2010–2012 or 2013–2016) and trim level before ordering to ensure compatibility with the OEM downpipe and cat flanges.

Each component is designed to slide together using lap‑joint clamps, eliminating the need for welding. This makes installation straightforward for a competent DIYer, though a lift or jack stands are required.

Tools and Materials

Gather the following before you begin:

  • Complete 3/8” or 1/2” drive socket set (metric: 10mm, 12mm, 14mm, 17mm, 19mm)
  • Combination wrench set (same sizes)
  • Torque wrench (capable of 20–80 ft‑lb)
  • Floor jack and two jack stands (minimum 2‑ton capacity)
  • Penetrating lubricant (e.g., WD‑40 Specialist or PB Blaster)
  • Rubber mallet or dead‑blow hammer
  • Safety glasses and mechanic gloves
  • Cutoff tool or reciprocating saw (if OEM bolts or hangers are rusted)
  • Clean rag and thread‑locking compound (blue Loctite recommended)
  • OEM or Borla exhaust gasket (if not included)
  • Digital caliper (to measure pipe diameters for alignment)

Having everything on hand eliminates frustrating pauses. Also consider a helper for lifting the heavy rear section into place.

Preparation Steps

Proper preparation prevents damage and injury. Park on a level concrete floor, engage the parking brake, and chock the rear wheels. Disconnect the negative battery terminal to avoid shorting any electrical components near the exhaust. Lift the car using the factory pinch weld jacking points (front and rear) and place jack stands under the reinforced frame rails. Never rely solely on a jack. Once secure, give the car a gentle shake to confirm stability.

Allow the exhaust to cool completely if the car was recently driven. Hot metal causes burns and makes penetrating spray less effective.

Removing the Stock Exhaust System

Start by spraying every bolt, nut, and rubber hanger with penetrating lubricant. Let it soak for 10–15 minutes. The Genesis Coupe’s OEM exhaust uses two main flanges: one at the back of the catalytic converter (14mm bolts) and one mid‑section (12mm). There are four rubber hangers supporting the rear section.

  1. Unbolt the mid‑pipe from the cat using a 14mm socket and wrench. If the bolts are seized, carefully use a breaker bar. Avoid twisting the studs; if they snap, you’ll need to replace the cat flange (not covered in this guide).
  2. Remove the two 12mm bolts connecting the mid‑pipe to the rear muffler section.
  3. Use a flat blade screwdriver to pop the rubber hanger isolators off the metal hooks. Spray lubricant helps here.
  4. Lower the stock exhaust assembly from the car. It may be heavy; support it with a jack or have a helper catch it.
  5. Inspect the old gasket at the cat flange. Replace it with a new one (often supplied with Borla kit or available at auto parts stores).

If any hanger bolts are rusted solid, cut them with a reciprocating saw. Replace with new stainless hardware from the Borla kit.

Installing the Borla Exhaust System

Start with the mid‑pipe section. Slide the supplied gasket over the cat flange studs, then place the Borla mid‑pipe flange against it. Finger‑tighten the 14mm nuts. Do not fully torque yet – you need alignment flexibility.

  1. Attach the front hanger that comes pre‑welded on the mid‑pipe to the factory rubber isolator.
  2. Slide the rear axle‑back section onto the mid‑pipe using the supplied lap‑joint clamp. Leave the clamp loose so you can rotate the pipes.
  3. Hang the rear section using its three hangers. You may need to stretch the rubber isolators; apply soapy water or silicone spray to ease installation.
  4. Align all pipes so they are centered under the car and do not contact the chassis, heat shields, or sway bar. A gap of at least ½ inch around all suspension components is ideal.
  5. Tighten the cat flange nuts to 30–35 ft‑lb. Tighten the lap‑joint clamp to 40 ft‑lb. Recheck all hanger positions.

Before lowering the car, start the engine and listen for leaks. Small puffs of smoke at joints indicate misalignment. Tighten or reposition as needed.

Torque Specifications and Final Checks

Use a torque wrench to avoid over‑stressing stainless steel threads. Borla recommends:

  • Cat flange nuts: 30–35 ft‑lb
  • Mid‑pipe to rear section clamp: 35–40 ft‑lb
  • Hanger bolts (if supplied): 15–20 ft‑lb
  • Optional tips set screws: 8–10 ft‑lb (if using clamp‑on tips)

After torquing, reconnect the battery. Lower the car and perform a road test at varying RPMs. At idle, listen for any metallic rattles. On the highway, check for drone at 2,500–3,000 RPM. Slight adjustments to hanger angle or pipe rotation often resolve contact issues.

Post‑Installation Tips

The Borla exhaust will “season” during the first few heat cycles. Some surface bluing on stainless steel is normal. Avoid full‑throttle runs for the first 200 miles to allow the gaskets to seat. Re‑check all clamps after 500 miles because thermal expansion can loosen them. Retorque to spec if needed.

If you notice a slight sulfur smell or light smoke for the first few miles, that’s residual oils from manufacturing burning off – it will disappear. Keep an eye on the exhaust tips to ensure they remain centered. Over time, the rubber hangers may settle; you can rotate the tips slightly by loosening the clamps and repositioning.

Performance Gains and Sound Characteristics

After installation, you’ll immediately notice a deeper, more aggressive exhaust note. The Borla Touring system produces a growl from 2,000–4,000 RPM with minimal drone, making it ideal for daily driving. The S‑Type is louder, with a pronounced bark on startup and at wide‑open throttle. Both systems reduce back pressure, allowing the turbo to spool more freely. Combined with a cold air intake and ECU tune, owners report 20–25 wheel horsepower gains.

Sound levels typically increase by 6–10 dB at full throttle compared to stock. Inside the cabin, drone is well‑controlled below 2,500 RPM. If you find the volume intrusive, consider using Borla’s optional sound‑reducing inserts (available for some models).

Troubleshooting Common Issues

  • Exhaust leak at cat flange: Ensure the gasket is centered and you used new bolts/nuts. Torque in a cross pattern. If leak persists, the cat flange may be warped – have a shop machine it flat.
  • Rattle under acceleration: Most often caused by the mid‑pipe contacting the transmission mount or sway bar. Loosen clamps, rotate the pipe slightly, and retighten.
  • Check engine light: Aftermarket exhaust alone won’t trigger a CEL, but if your 2.0T has a downstream O2 sensor, inactivity after cat removal may cause one. Borla systems retain the cat so this is unlikely. If it happens, verify sensor wiring isn’t damaged during installation.
  • Difficult hanger removal: Use a hanger removal tool or pry bar wrapped in a shop towel. Spray lubricant generously. If rubber tears, replace with aftermarket hangers (Energy Suspension offers polyurethane versions).

Maintenance for Longevity

Stainless steel resists rust, but road salt can still cause surface corrosion on welds. Wash the underside periodically in winter months. Apply a light coat of high‑temperature silicone spray to the hangers to prevent squeaks. Inspect the clamps annually and retorque to spec. If you ever need to remove the system for engine work, use anti‑seize on all hardware to ease future disassembly. Borla’s million‑mile warranty covers defects, not wear from road debris – so avoid off‑road use.

External Resources

For official part listings and warranty information, visit Borla Official Website. Community installation experiences and dyno charts are available on the Genesis Coupe Forum. Torque specifications can be cross‑referenced with the Hyundai Genuine Parts Catalog.

Enjoy the Upgrade

With the Borla exhaust installed, your Genesis Coupe 2.0T will sound as aggressive as it looks. The improved exhaust flow enhances throttle response and makes every drive more engaging. Take time to appreciate the craftsmanship and the refined engineering that went into this upgrade. Regular maintenance will keep it sounding great for years to come.