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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, 08:27:39 PM   #21
Brian N
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Default Re: American Racing Headers for the E46 M3

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Originally Posted by HassanEido View Post
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
From my conversations with Nick it does seem this way. He sold me on these headers without a doubt. He also said that these should work for a broader range of cars from stock to NA to FI because of the 6-1 rotational firing design.

Nick also mentioned if these headers sell well. Which I think they will. That he would consider making a complete exhuast system! This would be awesome for us guys looking to squeeze the rest out of this motor. I wonder what data he will come up with for tube size that would be optimal for us NA guys. When I mentioned that he should create a full 2.5 inch system he said he would have to do testing because he didn't want to slow down the exhaust flow. He said most of the restriction was up front in the header and section 1.

I hope he gets on here to talk more about it. I sent him a quick email mentioning that this thread went up. He is a really knowledgeable guy and true car nut.
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Old Sat, May-20-2017, 08:35:24 PM   #22
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Default Re: American Racing Headers for the E46 M3

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Originally Posted by Brian N View Post
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!!
We did, but still testing and running back up dyno's to confirm initial testing.

Quote:
Originally Posted by HassanEido View Post
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
Yes Hassan, so far this is exactly how it's playing out, but we're still testing to back-up initial numbers. I want to point out as well, that we're comparing a CATTED version of the ARH system to an UNCATTED header system. Also, as the opening paragraph mentions, these headers will require specific tuning to take full advantage of the unique design...sorry, can't really give specifics. I gave my input in regards to pricing as well...guess we'll see-lol
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Old Sat, May-20-2017, 08:39:26 PM   #23
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Default Re: American Racing Headers for the E46 M3

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Originally Posted by Brian N View Post
From my conversations with Nick it does seem this way. He sold me on these headers without a doubt. He also said that these should work for a broader range of cars from stock to NA to FI because of the 6-1 rotational firing design.

Nick also mentioned if these headers sell well. Which I think they will. That he would consider making a complete exhuast system! This would be awesome for us guys looking to squeeze the rest out of this motor. I wonder what data he will come up with for tube size that would be optimal for us NA guys. When I mentioned that he should create a full 2.5 inch system he said he would have to do testing because he didn't want to slow down the exhaust flow. He said most of the restriction was up front in the header and section 1.

I hope he gets on here to talk more about it. I sent him a quick email mentioning that this thread went up. He is a really knowledgeable guy and true car nut.
I completely agree that most of the restriction is upfront. Stock section 1 meaures at 2.16" then becomes 2.36 at the resonator... I think most of the gains of the v1s are due to the section 1 being of a larger diameter. Now imagine even larger primaries and 6to1 collector where some pulse is always tugging on the next
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Old Sat, May-20-2017, 09:02:03 PM   #24
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Default Re: American Racing Headers for the E46 M3

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Originally Posted by stash1 View Post
Also, as the opening paragraph mentions, these headers will require specific tuning to take advantage of the unique design...sorry, can't really give specifics.
This is what I still don't understand. TTFS says in all of their threads (tune, air rail, these headers) that their goods are available for NA and FI builds, but then when it comes to brass tacks, they only support their AA/Prima SC kits. So if these headers require a special tune, which they will not offer for any other SC kits, then really these headers are not available to ~90% of FI owners.
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Old Sat, May-20-2017, 09:19:18 PM   #25
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Default Re: American Racing Headers for the E46 M3

Definitely interested in these. Can't wait for official numbers! Would definitely consider


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Old Sat, May-20-2017, 09:29:31 PM   #26
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Default Re: American Racing Headers for the E46 M3

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Also, as the opening paragraph mentions, these headers will require specific tuning to take full advantage of the unique design...sorry, can't really give specifics. I gave my input in regards to pricing as well...guess we'll see-lol
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This is what I still don't understand. TTFS says in all of their threads (tune, air rail, these headers) that their goods are available for NA and FI builds, but then when it comes to brass tacks, they only support their AA/Prima SC kits. So if these headers require a special tune, which they will not offer for any other SC kits, then really these headers are not available to ~90% of FI owners.
I'm not 100% sure I understand the question, but I'll give it a shot! I edited my original post (see above), because like installing headers on ANY car (whether it be carbureted or fuel injected, or forced induction), tuning is required to maximize the potential of the headers. Of course headers should and will increase power w/o tuning, but any tuner worth his salt will tell you that a custom tune will be required to squeeze every last bit of power from the header/engine. Because these headers are unlike any other header currently offered, I would say that it's recommended to update the tune (whether it's an NA or FI engine) to take FULL advantage of the unique design. This isn't a TTFS thing, it's just how engines work.
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Old Sat, May-20-2017, 09:38:15 PM   #27
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Default Re: American Racing Headers for the E46 M3

How big is the sec1 part of the header? I'm thinking of possibly modifying it and adding a v-band clamp to work with my bimmerworld exhaust.
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Old Sat, May-20-2017, 09:43:35 PM   #28
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Default Re: American Racing Headers for the E46 M3

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How big is the sec1 part of the header? I'm thinking of possibly modifying it and adding a v-band clamp to work with my bimmerworld exhaust.
Here ya go:

Quote:
Originally Posted by TTFS View Post

Some information on the headers:

1. 1-3/4 primaries with optimized length for outstanding low to high rpm power.

2. 6 into 1 merge collector with built in rotational firing from much improved scavenging and unique sound.

3. 6 into 1 internal scavenger spike to direct exhaust pulses to the center of the merge.

4. Direct fit 3-1/2 downpipe that splits and mates to section two.

5. thick one piece flange eliminates possibility of warping

6. Counter bored bolt holes allows use of factory studs and nuts providing a hassle free install

7. Built to last indefinitely in street or max effort race applications

8. 100% Made In USA using 304 S/S throughout

9. Ability to run it as a single catted or catless setup
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Old Sat, May-20-2017, 09:46:08 PM   #29
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Default Re: American Racing Headers for the E46 M3

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Here ya go:


looks like i skipped over that part lol thanks!
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Old Sat, May-20-2017, 10:04:27 PM   #30
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Default Re: American Racing Headers for the E46 M3

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Originally Posted by stash1 View Post
I'm not 100% sure I understand the question, but I'll give it a shot! I edited my original post (see above), because like installing headers on ANY car (whether it be carbureted or fuel injected, or forced induction), tuning is required to maximize the potential of the headers. Of course headers should and will increase power w/o tuning, but any tuner worth his salt will tell you that a custom tune will be required to squeeze every last bit of power from the header/engine. Because these headers are unlike any other header currently offered, I would say that it's recommended to update the tune (whether it's an NA or FI engine) to take FULL advantage of the unique design. This isn't a TTFS thing, it's just how engines work.
Okay. I get that much. I was thrown off by you saying "these require a specific tune." I presumed that meant a bespoke, TTFS tune. Understood now.
For background, in the TTFS air rail/map thread, they say that their rail/tune combo is available and beneficial for NA and FI builds. Upon inquiry, they said the only FI they support is their own AA/Prima kit.
I have a Dinan SC kit. Works and runs great, but I'd like to add headers. As you note, a retune would maximize the gains. Dinan won't retune, of course. So I asked TTFS if I could throw their air rail and map and some headers on my car and have them tune it and they said nope.
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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)