Exhaust Drone Removal - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
Best Resonator to Remove Drone but Keep Sound? Or a Valve Solution? | 2015+ S550 Mustang Forum (GT, EcoBoost, GT350, GT500, Bullitt, Mach 1) - Mustang6G.com
![Problem - Exhaust drone: Solution side branch, aka 1/4 wave resonator, or Helmholtz resonator| Grassroots Motorsports forum Problem - Exhaust drone: Solution side branch, aka 1/4 wave resonator, or Helmholtz resonator| Grassroots Motorsports forum](http://ost.ebeans.ch/albums/userpics/10005/quarter_wave_resonator_idea.jpg)
Problem - Exhaust drone: Solution side branch, aka 1/4 wave resonator, or Helmholtz resonator| Grassroots Motorsports forum
![The cure for drone-- 1/4 resonance pipes aka J-pipes aka Helmholtz tubes - LS1TECH - Camaro and Firebird Forum Discussion The cure for drone-- 1/4 resonance pipes aka J-pipes aka Helmholtz tubes - LS1TECH - Camaro and Firebird Forum Discussion](https://ls1tech.com/forums/attachments/cadillac-cts-v-2004-2007-gen-i/609879d1501326500-cure-drone-1-4-resonance-pipes-aka-j-pipes-aka-helmholtz-tubes-img_20110205_210528.jpg)
The cure for drone-- 1/4 resonance pipes aka J-pipes aka Helmholtz tubes - LS1TECH - Camaro and Firebird Forum Discussion
![UPDATE IV: Exhaust Drone - X-pipe flute?. See Post 72 - Page 5 - Rennlist - Porsche Discussion Forums UPDATE IV: Exhaust Drone - X-pipe flute?. See Post 72 - Page 5 - Rennlist - Porsche Discussion Forums](https://rennlist.com/forums/attachments/928-forum/552012d1310799530-update-iii-exhaust-mods-jeffs-drone-control-success-with-resonance-tube-imag0251s.jpg)
UPDATE IV: Exhaust Drone - X-pipe flute?. See Post 72 - Page 5 - Rennlist - Porsche Discussion Forums
![How To Reduce Or Eliminate Obnoxious Exhaust Drone, Noise From Your Vehicle, Car or Truck - Part 1 - YouTube How To Reduce Or Eliminate Obnoxious Exhaust Drone, Noise From Your Vehicle, Car or Truck - Part 1 - YouTube](https://i.ytimg.com/vi/iPxZ9VX-n4w/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLC3sJHfcXQx_Z_MS9zIeC2kwb_JPw)