![I did the golf tee mod (hopefully the right way) on my 435i because of annoying squeal of exhaust flap when riding in sport mode. It's temporary because I will be upgrading I did the golf tee mod (hopefully the right way) on my 435i because of annoying squeal of exhaust flap when riding in sport mode. It's temporary because I will be upgrading](https://preview.redd.it/bl2a822mcx451.jpg?auto=webp&s=703dedc3e92f1135c1b9609b2068b65e619a92d8)
I did the golf tee mod (hopefully the right way) on my 435i because of annoying squeal of exhaust flap when riding in sport mode. It's temporary because I will be upgrading
Golf Tee Mod - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
DIY: Golf tee mod / exhaust flapper disable w/ pictures - Page 12 - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
DIY: 335i Exhaust Sound Mod. Better, and even easier than golf tee mod. - BMW 3-Series (E90 E92) Forum
DIY: 335i Exhaust Sound Mod. Better, and even easier than golf tee mod. - BMW 3-Series (E90 E92) Forum
![Golf tee mod / Exhaust valve mod + Free Exhaust Sound Hack Mods for Dual & Single Muffler Cars Loud* - YouTube Golf tee mod / Exhaust valve mod + Free Exhaust Sound Hack Mods for Dual & Single Muffler Cars Loud* - YouTube](https://i.ytimg.com/vi/qe6dxIzKvjg/maxresdefault.jpg)