Our cat-back exhaust has a deeper, more aggressive note under acceleration and only slightly louder than stock while cruising without annoying cabin resonance or drone. Many of our customers are pleased with our cat-back exhaust. We've integrated our race-proven patented Multi-core technology in our cat-back (PN-140496) to tune our cat-back note without restrictive chambers or baffles.
Adding our UEL XR-1 Header will enhance the boxer engine note. This combination has been sound-tested (for you track guys) to comply 92dB(A) at Mazda Raceway Laguna Seca. We'll have our XR-1 catless mid-pipe released in a week for those looking for a complete Borla exhaust covered by our limited Million-Mile-Warranty!
At Borla we know sound is subjective and not everyone can agree on the right sound. Later this month we'll have UEL & EL Header options offering a choice in sound and a catless Race Mid-Pipe for unrestrictive track-performance. These combined with our street-legal cat-back exhaust, and our unique exhaust diffuser offer the most comprehensive product integration designed to work together for the best performance, look, and sound for the FR-S/BRZ.
Thanks for your interest in Borla!