INSTALLATION GUIDE
CrateMuer™ Installaon Guide
PAGE
2 of 8
BORLA PERFORMANCE INDUSTRIES
CrateMuffler™ Touring Resonator Option
CrateMuffler™ Installation Guide
*** TOURING RESONATOR OPTION ***
At Borla Performance Industries, Inc. we understand what you hear in the exhaust note (engine sound and sound pressure levels) is
a subjective topic. While we can identify and minimize unwanted cabin resonances, the loudness or Sound Pressure Level (SPL) is
always a topic of discussion with a final decision determined by the vehicle owner.
Vehicle exterior SPL is measured in decibels (dB) using a calibrated instrument at a set distance, angle, and height from the ex-
haust system outlet. An interior SPL reading is a more complex measurement typically from the drivers seat using head-mounted
microphones. Frequencies vary throughout the rpm band and these variations at higher SPL may cause uncomfortable resonances
in the cabin. A solution to remedy this resonances is often fixed adding more muffler to attenuate the sound.
If you want to lower the SPL of your new CrateMuffler™, you can install the Borla Touring Resonator Option. The Tour-
ing Resonator Option is designed to attenuate overall sound. This is perfect for customers looking to reducing the sound level
2-3 dB(A). This straight-through design will not degrade the performance of your vehicle.
The Borla Touring Resonator Option is available in the same tubing diameters of your CrateMuffler™ and constructed in T304
stainless steel, and backed by the Borla Million-Mile Warranty. Borla recommends welding (not clamping) the Borla Touring Res-
onator Option for final installation.
The BORLA TOURING RESONA-
TOR OPTION is available in 2.25”,
2.50”, and 3.00” tubing diameters. The
outside diameter is 4.00” as it is designed
to fit in the tight spaces of the current
exhaust path. These are designed to be
welded (not clamped) for installation and
positioned in front of the CrateMuffler™
as shown.
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