[patriotaki]

Hey all,

so i've went to a local exhaust shop and i got a muffler delete and he replaced it with some black pipes.

The car sounds awesome, but the pipes have become very rusty after 2 years.
Usually a big portion of the rust goes away after a 1-2hour drive, but it comes back.

Is this something to worry about or is it normally? is it possible that the rust can transfer in the rest of the car?

Should i replace the pipes with stainless steel? Let me know your thoughts

car: f32 420i 2018

Note: i rarely use the car, done only 500km in 1 year

[MaverickCruise]

rust will not transfer to other place of the car

Just leave it alone,even rust can be used for several years. Another exhaust system can be replaced later

[patriotaki]

Originally Posted by MaverickCruise

rust will not transfer to other place of the car

Just leave it alone,even rust can be used for several years. Another exhaust system can be replaced later

thanks for the suggestion, my only "problem" is that due to the muffler delete the backend of the car looks a bit higher and those behind me will be able to see the rust on the pipes.

Here is how it looks now



Removing the rust is not recommended from what i've read here, correct?

[MaverickCruise]

Looks like it is. Rust is difficult to remove unless the material is changed, so just leave it alone, if pursue aesthetics, you need to replace the exhaust system. For saving money, and tell others don't lie down on the ground to watch it.

[sspade]

Not a huge deal but if concerned about the look, get under there with a can of high temp black paint and a piece of cardboard to block overspray. If you want to get extra clearance, back up on a set of ramps.

[Info@mad-us.com]

Originally Posted by patriotaki

Hey all,

so i've went to a local exhaust shop and i got a muffler delete and he replaced it with some black pipes.

The car sounds awesome, but the pipes have become very rusty after 2 years.
Usually a big portion of the rust goes away after a 1-2hour drive, but it comes back.

Is this something to worry about or is it normally? is it possible that the rust can transfer in the rest of the car?

Should i replace the pipes with stainless steel? Let me know your thoughts

car: f32 420i 2018

Note: i rarely use the car, done only 500km in 1 year

Just have it redone in stainless and not steel.

[Billfitz]

You can try exhaust system paint. It will probably have to be periodically re-touched.

[Info@mad-us.com]

Originally Posted by Billfitz

You can try exhaust system paint. It will probably have to be periodically re-touched.

When new I think that would of worked but the rust will just flake it off unless he cleans the entire thing.

[patriotaki]

Originally Posted by Info@mad-us.com

Just have it redone in stainless and not steel.

That's what i was thinking, does the sound change with stainless?

[Billfitz]

Only if you're hitting it with a stick.

[Info@mad-us.com]

Originally Posted by Billfitz

Only if you're hitting it with a stick.

. I don't think it would be different enough to hear.

[Billfitz]

It probably would, since the resonant frequency of a pipe varies with length, material density and thickness. I doubt that SS would be identical to plain steel in those respects. But as for the exhaust sound, fahgeddaboutit.