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I have the Borla's on my my car. Yes, under load (up a hill in 2nd gear for example) there is quite a bit of 2.5k-3k drone. Normal driving, even spirited driving isn't terrible. I wouldn't classify it as "loud as hell", but it does let you know it's there.
Not super impressed with the build on the Bola's - attention to detail is missing. The fit was difficult, as it didn't line up very well with stock connection points. Definitely took some persuasion to get it to fit.
I've had it at Laguna Seca w/o a problem.
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