Sebaatian

Hi, i change my exhaust system, And its fine but between 2k-3k rpm i Got drone idk Why i post picture for any1 who try help me

Robb M.

not sure why the drone, but those are some ugly welds.

extanker

many aftermarket systems have a drone ......some worse than others ....just about all more than oem. live with it or go back to stock ....and regain your low end torque you lost

nowakm99

Which exhaust system is that? I can't make out the writing on the left muffler.

For the record, drone in that RPM range is not unusual in aftermarket exhausts. Some companies do a good job of managing it, but others get 'exhausting' real quick.

AWOL

And sometimes you don't even realize how bad the drone is until after the drive.

Put a Borla on an S4 I once owned. It sounded great in the higher rpms, but droned around 2k. I tolerated it while driving.

But after the 15-minute highway commute to work, I'd be literally nauseous sitting at my desk. Ringing ears. Headache.

FWIW, Borla did not take back the exhaust, despite their "great sound, zero drone" claims. Took an $800 bath when I sold it, only a week old.

WJGreer

+1

Drone is a fact of life in aftermarket exhaust. More or less depending on the brand. Those companies are achieving (claimed) power gains and providing the sound you think you want by eliminating chambering and noise dampening. The solution is to have your OEM exhaust put back on.

Slim987

..

badabing

I have a 987.2 CS that I recently fitted fabspeed race headers and supercup exhaust.

First I did just the race headers and kept the stock exhaust. Nice increased growl and engine revved freer. No drone.

Then I put on the Supercups. The thing snarls and screams like a banshee at high rpm. The drone at 2K to 3K rpm is ridiculous. The car is not drivable on the street like this.

Rick_H

As a certified TIG welder I couldn't agree more, first thing I saw...lol That being said drone is different with muffler chamber and baffle design.

Soul Performance

The system may lack the necessary muffling / resonators to target and eliminate droning in that frequency range. It's possible those resonators are straight through, perforated core design which encourages flow but they alone may not be enough to cut out undesirable frequencies - essentially it's a very aggressive system. If you're considering changing your exhaust to solve this problem, we've designed our Valved Exhaust to give you the most tone possible while focusing on eliminating drone. Happy to help a Rennlist member with a deal if you'd consider it, and we're always available to consult with anyone on their current or future exhaust setup.

-Mike S

kiznarsh

What flavor S4? I had the APR exhaust on my B8 S4 and if there was any drone, it was negligible.

OP - it's not so much as you having a drone problem, it's that your aftermarket exhaust wasn't designed to eliminate it. No option other than going back to stock.

WJGreer

I had a similar experience with an RPI exhaust on a 545 BMW. I'm not sure what I was expecting, but it pretty much sounded like there was no muffler on the car at all. The first time I fired it up at home, my neighbor came out of his front door to investigate.

RPI sells silencers, which are essentially plugs that narrow the aperture of the exhaust tips. With one silencer in each tip, the exhaust quieted down to a nice level. But I'm sure at that point the exhaust system was sapping power.

AWOL

2015 S4 with DSG. It droned in 7th, bad.

It's for this reason I won't even consider an aftermarket exhaust for my 2014 CS PDK.

Maybe the PSE if one comes along used for the right price...

dndodd

Even the Porsche PSE has a bad drone so much so I have a stock exhaust ready to put on. 2014 CS PDK

blinsc

I'd be careful about saying "at any rpm range." If you kept the car above 3000 rpm (which is easy and likely with the 6MT) then I would agree the Maxflow does sound good and doesn't drone. However, I had the same exhaust on my 981 S with PDK and it droned, quite a lot in fact, between 1500 and 3000 rpm, which happens to be where the PDK lands most of the time in auto. It droned so much that I took it off and sold it and put the stock back on.