# E46 M3 headers

**URL:** https://forums.speedlife.net/t/e46-m3-headers/268082
**Category:** Shift518 Automotive
**Created:** [January 13, 2014, 5:52am UTC](https://forums.speedlife.net/t/e46-m3-headers/268082 "2014-01-13T05:52:07Z")
**Posts on this page:** 1
**Showing post:** 10

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### Author: ![Cossey](https://avatars.discourse-cdn.com/v4/letter/c/3ec8ea/32.png) [@Cossey](https://forums.speedlife.net/u/Cossey)
#### Post date: [January 13, 2014, 2:43pm UTC](https://forums.speedlife.net/t/e46-m3-headers/268082/10 "2014-01-13T14:43:50Z")

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> [@Milf inside.](https://forums.speedlife.net/t/milf-inside/53711/69):
>
> do they flow as well? ive seen some serious dyno plots with just ebay headers. like 20whp!
> 
> what forum would be the best to look?

The reason they’re getting that much power is because of the cat in the factory header. It’s very restrictive.

I’d check E46Fanatics, Bimmerforums, etc…

Those are the two I’m on, but haven’t posted in a while. I was considering doing a header as well, but on hold for a few until spring.

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