How much HP does a Borla exhaust add?

Factors Influencing HP Gains

The horsepower (HP) gain from a Borla exhaust system depends on the vehicle’s make, model, and engine type. For example, vehicles with restricted factory exhausts often see more significant improvements than those with already optimized systems. Factors like the exhaust’s design, the vehicle’s drivetrain, and even driving conditions (e.g., highway vs. track use) play a role. Borla claims their systems can add 5–25 HP on average, but this range is not universal.

Specific Vehicle Examples
Some Borla exhaust installations have been documented to deliver measurable gains. For instance, in Chevrolet Camaro or Ford Mustang applications, dyno tests occasionally report 10–20 HP increases under optimal conditions. Light-duty trucks like the Toyota Tacoma or Jeep Wrangler may see 8–15 HP gains. However, these figures are not guarantees, as results vary based on the vehicle’s original exhaust design and engine tuning.

Testing and Individual Results

Borla exhausts are often tested in controlled environments, but real-world results depend on proper installation and compatibility. Third-party dyno tests sometimes show smaller gains (e.g., 5–10 HP) on vehicles with efficient stock exhausts. Conversely, high-performance engines or modified vehicles might achieve higher gains. Always check Borla’s application-specific data or third-party reviews for your exact vehicle to estimate potential improvements.

Additional factors like driving habits and engine load can also influence perceived power changes. While Borla systems prioritize flow and sound, HP gains are secondary to improved throttle response and reduced backpressure in most cases.

Which Borla muffler is the loudest?

The Borla S-Type Axle-Back System

The Borla S-Type Axle-Back System is widely recognized as the loudest option in the Borla lineup. Designed for aggressive sound, it features a free-flowing, straight-through muffler design that maximizes exhaust flow while producing a deep, resonant exhaust note. This system is optimized for performance vehicles and is often recommended for those seeking an unmistakable “growl” without excessive drone at highway speeds. Key features include mandrel-bent tubing and race-inspired valving, which amplify the volume while maintaining a sporty tone.

Comparing Borla Models: Loudest vs. Balanced Sound

While the S-Type leads in volume, other Borla models prioritize balance. The Borla Touring Series, for example, delivers a more refined, sporty sound without the extreme loudness of the S-Type. In contrast, the Stage 2 or catback systems (depending on the vehicle application) may offer louder options than the Touring but typically fall short of the S-Type’s intensity. Key distinctions include:

• S-Type: Prioritizes aggressive sound with minimal sound damping.
• Touring: Balances performance and street-friendly noise levels.
• Stealth Series: Quieter, designed for a subtle yet powerful tone.

Vehicle-Specific Variations and Modifications

The perceived loudness of a Borla muffler can vary based on the vehicle’s engine size, exhaust system configuration, and aftermarket modifications. For instance, pairing the S-Type with an open exhaust tip or a less restrictive mid-pipe may amplify its volume further. Conversely, some applications might tone down the noise slightly to meet noise ordinances or driver preference. Always verify the specific model’s decibel ratings and reviews for your vehicle to ensure it aligns with your desired sound profile.