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Alright, I've posted this in a few threads and havent had much feedback.

I installed a full cat-back APR exhaust system about 1 month ago. I like the exterior sound, however there is much more drone (2300-2800 rpm) inside than I thought there would be. I'm unsure if the shop left a small leak in the system or something...or perhaps this is how the APR system is...??

Under acceleration and coasting down a hill with back pressure its louder than anticipated. I don't mine the under acceleration sound, but cruising at 75-80 is even a bit annoying after a 2hr trip.

Is this normal? Anyone else experience this?

Appreciate your feedback.
 

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i also have the apr exhaust with a test pipe, and i have no drone at all

my review is that it is the most quietest exhaust from the outside, but when you are on the gas you do hear it from the out side, but for normal driving i have no drone at all
 

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I have the APR stage III turbo kit w/ test pipe and full APR cat back and do have a bit of interior noise but nothing I can't live with and the wife seems to be ok with it too and she's the ultimate judge of drone - trust me on this.
 
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