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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, May-20-2017, 05:38:19 PM   #11
Malloy
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Default Re: American Racing Headers for the E46 M3

How would you compare these to the Epic headers?
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Old Sat, May-20-2017, 06:29:53 PM   #12
Brian N
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Default Re: American Racing Headers for the E46 M3

Finally!! Been biting my tongue for a few weeks now.

Did th EGT sensor ever make it into production? I remember Nick saying that he might leave it off? Since he said it wasn't needed. I wasn't sure if the CSL tune pulled any data from that Sensor.
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Old Sat, May-20-2017, 07:30:47 PM   #13
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Default Re: American Racing Headers for the E46 M3

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Originally Posted by 10speed View Post
I'm really interested in how these headers sound.
They have a slightly higher pitched, more exotic sound to them IMO.

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Originally Posted by 10speed View Post
Would also like to know the weight difference between these headers another others if it's substantial or not. Also, this header only runs 1 o2 sensor?
I didn't weigh them, but the headers themselves feel a little 'beefier' than most other headers, but I think that the section I that comes w/them certainly weighs less than a factory section I. I'll weigh the next set up and report back.

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How would you compare these to the Epic headers?
In terms of power?

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Originally Posted by Brian N View Post
Finally!! Been biting my tongue for a few weeks now.

Did th EGT sensor ever make it into production? I remember Nick saying that he might leave it off? Since he said it wasn't needed. I wasn't sure if the CSL tune pulled any data from that Sensor.
Hey Brian, yep, it has provisions for the EGT. However, the pre-production version only has provisions for 3 O2 sensors (1 pre-cat O2 sensor bung, and 2 post-cat sensor bungs). I think the production version will have provisions for 4 O2 sensors to make it plug n' play buddy!
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Old Sat, May-20-2017, 07:34:21 PM   #14
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Default Re: American Racing Headers for the E46 M3

OMG OMG OMG
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Old Sat, May-20-2017, 08:02:05 PM   #15
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Default Re: American Racing Headers for the E46 M3

These look insane. Sub'd for more data.
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Old Sat, May-20-2017, 08:07:55 PM   #16
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Default Re: American Racing Headers for the E46 M3

Equal length primaries?
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Old Sat, May-20-2017, 08:12:26 PM   #17
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Default Re: American Racing Headers for the E46 M3

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Equal length primaries?
Yes, as equal as packaging allows.
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Old Sat, May-20-2017, 08:18:50 PM   #18
Brian N
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Default Re: American Racing Headers for the E46 M3

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Hey Brian, yep, it has provisions for the EGT. However, the pre-production version only has provisions for 3 O2 sensors (1 pre-cat O2 sensor bung, and 2 post-cat sensor bungs). I think the production version will have provisions for 4 O2 sensors to make it plug n' play buddy!
Awesome thanks Stan. I just sent over another email to Nick to make sure all the sensor bungs made it on my order lol.

It goes without saying but I am very very interested in your results. I hope you made some extra power with these!!
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Old Sat, May-20-2017, 08:19:34 PM   #19
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Default Re: American Racing Headers for the E46 M3

This has the potential to be the end all be all headers. All the bottom end and highest top end with a 3.5" down pipe? Magic bullet i just hope the price is right too
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Old Sat, May-20-2017, 08:24:46 PM   #20
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Default Re: American Racing Headers for the E46 M3

Interesting, i want these.

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Discussing American Racing Headers for the E46 M3 in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)