How to make your e46 exhaust louder for free!!! Butterfly MOD

Probably the easiest mod you can do to your e46 to make a sound pretty good out the back. Like and subscribe to see more videos coming soon on the bmw, I plan to do a full build on this car and I can only do it if you support me.
Let me know if there is anything specific you want to see with the car and I’ll try to make it happen. STAY TUNED

[@ziadanwar9435]

Thanks a lot for the great tip :)

[@Zoinkinator]

my 325i from 04 didnt have this valve, but i do have this vacuumpump.

[@casperholm78]

got that hot air intake....

[@FDSGarage]

Changing that soon

[@jashandeepsinghkhosa6956]

i have a 325i does it have this valve as well?

[@FDSGarage]

I believe all e46’s have the valve

[@Novalls]

I have a 318i e46 does it still works because its 4 cly ?

[@FDSGarage]

As long as it has the same vacuum line going to the muffler then yes.

[@only4carz]

Bro same thing lol no difference and as a mechanic unplugging it is bad for your car

[@FDSGarage]

Buddy it’s doesn’t do anything bad to the car, it’s okay keyboard mechanic😂, Also under load it keeps the flap open whereas it it was connected it would close under load.

[@only4carz]

@FDSGarage yes it does. I'm not stopping you but belive what u want

[@Carlos12t3lovesyamahas]

@@FDSGarageit does make it bad. Because of the exhaust gas backfire it can make it not as smooth at low speeds (0-40) unless your always heavy foot driving it lowers performance. Gas usage etc