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Borla exhaust AND 2nd Cat. Bypass Pipes?
I've read many exhaust posts which mention that both the Borla and Chinese made exhausts have a noticeable drone in the 2K-3K RPM range. I've also read that by adding the secondary cat. bypass pipes to the Chinese made exhausts, the drone is significantly reduced or eliminated.
If anyone has added the secondary cat. bypass pipes to a Borla exhaust, did they reduce or eliminate the drone?
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