Addressing Drone at Cruise

[CaptainSlow65]

Hi all! Just picked up an E92 M3 and loving it so far, but I'm noticing more drone than I would like, most noticeable in 6th around 40-45 MPH anytime I'm using maintenance throttle.

Previous owner installed Turner test pipe and a Corsa cat-back exhaust. If I were to revert/replace the exhaust to eliminate the drone would I likely be replacing the exhaust or the test pipe? I've read that the Corsa system doesn't drone with the stock cats but I don't know enough to say that it's definitely the test pipe. Whole system sounds fantastic when I'm ripping around but I do get a little self conscious when I'm just going about my day.

Or does the E92 drone even in stock form and I should get used to it?

Edit: Car is MT, so it's not like I'm in sport mode and the car is holding gears longer or anything.

[roastbeef]

It's your xpipe. Check to see if it has resonators. If it doesn't, add some.