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88-91dBA is terrific news for those who plan to track their FR-S using Borla Header 17284 + Cat-back 140496. Knowing that there are no issues passing sound @ MRLS answers this question for many FR-S/BRZ track owners with our cat-back. It's comforting to know adding our UEL Header will allow them to have both performance and that awesome boxer-engine sound!
At Borla Performance we prefer to sound-test @ Mazda Raceway Laguna Seca since they've enforced sound-limits for years and many racers are familiar with their standard. Recently we confirmed our Spec Miata Race Exhaust System also complies with MRLS 92 dBA sound limit.
Thanks again Chris for posting this video. Looks like you had a great time in the rain - MRLS is fun regardless of the weather. You're right about the rain and how sound limits can take the reading higher than a dry track day.
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