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Discussion Starter · #1 · (Edited)
Hello.

I'm looking to purchase the non-lexus HKS exhaust and Joe's intake system for my future IS350.
While taking a test drive, I noticed how quiet and muffled the interior of the IS was. I'd love to gain some horsepower, and also an aggressive tone to my car... yet, be able to "shut out" the extra noise by simply closing my windows.

How much more noise have you noticed with an aftermarket intake/exhaust setup?
How about the dreaded "drone" at low-mid RPMs?




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