Exhaust Valve Mod?

[WillemOlaf]

Hey all,

My friend with a 335i showed me a "mod" that he performed where he unplugged the exhaust valve making his car sound like a cold start all the time.

Is there an equivalent to this on the 1M? Does it even have an exhaust valve? I noticed cold start has a great sound to it but the car quickly quiets down. I cannot find information on this anywhere pertaining to the 1M given the different rear section and whatnot.

[1&done]

No valve, BMW gutted the resonator instead. If seeking louder you are the next step seems to be Maddad midpipes or equivalent.

[Gangplank]

Originally Posted by WillemOlaf

Hey all,

My friend with a 335i showed me a "mod" that he performed where he unplugged the exhaust valve making his car sound like a cold start all the time.

Is there an equivalent to this on the 1M? Does it even have an exhaust valve? I noticed cold start has a great sound to it but the car quickly quiets down. I cannot find information on this anywhere pertaining to the 1M given the different rear section and whatnot.

Exhaust flap in the muffler on the 135i. It's often referred to as the "golf tee mod" because some people use a golf tee to plug the hose that actuates the flap valve. The better way is to unplug it in the trunk area left side under the carpet.

Not sure if the 1M has a flapper valve or not.

https://www.1addicts.com/forums/showthread.php?t=213042

[WillemOlaf]

Originally Posted by 1&done

No valve, BMW gutted the resonator instead. If seeking louder you are the next step seems to be Maddad midpipes or equivalent.

Originally Posted by 1&done

No valve, BMW gutted the resonator instead. If seeking louder you are the next step seems to be Maddad midpipes or equivalent.

Appreciate the response and info! Thank you!