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      08-03-2011, 11:07 AM   #1
Skiptomylou37
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Headers Not Worth It?

So I just picked up a brand new, IB e90 M3(had an 07' 335xi before) and am starting to plan out what all I want to do it with mods over the next year or two. From the research I have done and all the great info I have gained on this forum, it seems like the most logical/bang for your buck way to go is air intake, pulley, full exhaust(catback, x-pipe, and sportcats), and a tune. Something that I have been surprised to see is that there does not seem to be a lot of talk about aftermarket headers or the performance gains from them on the e9X M3s. Is this because the OEM headers are super efficient to begin with or because the benefits of aftermarket headers doesn't outweigh the cost?


P.S. If anyone knows a good BMW tuner anywhere near Pittsburgh, let me know. I'd appreciate it!

Last edited by Skiptomylou37; 08-03-2011 at 11:13 AM.
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      08-03-2011, 11:16 AM   #2
e92Mjunky
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I heard from a source that several major aftermarket companies built and tested headers and could only make 2-3 hp, to mass produce a product that may retail at $3-$4K would not be worth anyone's time or effort, I bet the install would be a major pain too
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      08-03-2011, 11:41 AM   #3
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Headers offer no appreciable gain on a standard S65. If the motor displacement is drastically increased, then yes, fine tuning the header tubing can be beneficial for some power gains.

The factory header is already an equal length tubular header with a beautifully crafted motorsport 4-1 collector at the end. It has no catalysts or restrictions on it.

Installation is a nightmare as well and extremely tight in there.
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      08-03-2011, 12:00 PM   #4
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Quote:
Originally Posted by Malekreza11 View Post
Headers offer no appreciable gain on a standard S65. If the motor displacement is drastically increased, then yes, fine tuning the header tubing can be beneficial for some power gains.

The factory header is already an equal length tubular header with a beautifully crafted motorsport 4-1 collector at the end. It has no catalysts or restrictions on it.

Installation is a nightmare as well and extremely tight in there.
Exactly. No need to change the factory headers.
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      08-03-2011, 12:08 PM   #5
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Quote:
Originally Posted by e92Mjunky View Post
I heard from a source that several major aftermarket companies built and tested headers and could only make 2-3 hp, to mass produce a product that may retail at $3-$4K would not be worth anyone's time or effort, I bet the install would be a major pain too
This is true, come of the most well know manufacturers have done alot of testing and gained not alot other than some midrange torque.
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      08-03-2011, 01:11 PM   #6
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Such a bittersweet fact. Sweet in the sense that, that's less money for us to spend. Bitter because it would have been so sweet to have stepped, equal-length, long tube headers...now it doesn't seem possible, haha
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      08-03-2011, 01:49 PM   #7
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the m3 GT4 car uses stock headers

the M3 GT2 car has slightly different, weight reason...

see output per liter displacement from stock

even headwork will not bring a lot on n/a engine....
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      08-03-2011, 01:51 PM   #8
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RD Sport made long tube headers. I think they cost $7500.
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      08-03-2011, 02:47 PM   #9
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Originally Posted by Simrokkzz View Post

even headwork will not bring a lot on n/a engine....
You must have never heard of small block Fords and Chevy's...you can make killer power with heads on these motors

And its actually quite the opposite turbo or supercharger if force feeding the motor so the motor doesn't have to work as hard sucking air into the CC
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      08-03-2011, 02:52 PM   #10
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Ericsson Titanium S65 headers. Not worth it at all but so nice to look at

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      08-03-2011, 02:59 PM   #11
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oh the terrible things id do to have those titanium headers.....
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      08-03-2011, 03:07 PM   #12
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Quote:
Originally Posted by Simrokkzz View Post
the m3 GT4 car uses stock headers

the M3 GT2 car has slightly different, weight reason...

see output per liter displacement from stock

even headwork will not bring a lot on n/a engine....
Is the GT4 car allowed to change headers?
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      08-03-2011, 03:07 PM   #13
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Quote:
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oh the terrible things id do to have those titanium headers.....
Yeap... im with you...
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      08-03-2011, 03:33 PM   #14
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Ericsson Titanium S65 headers. Not worth it at all but so nice to look at
What does this cost lol
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      08-03-2011, 03:36 PM   #15
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What does this cost lol
YOUR ARM AND YOUR LEG... PLUS YOUR GUTS....
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      08-03-2011, 04:08 PM   #16
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What does this cost lol
If you have to ask......
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      08-03-2011, 04:35 PM   #17
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Quote:
Originally Posted by Simrokkzz View Post
the m3 GT4 car uses stock headers

the M3 GT2 car has slightly different, weight reason...

see output per liter displacement from stock

even headwork will not bring a lot on n/a engine....
The M3 GT2 S65 is pretty much very different than your standard S65 as the firing order and crank have been changed to accommodate its flat-plane crank.

Head work does a lot if the head is already restrictive. The S65 cylinder heads are pretty much optimized for maximum VE and there isn't much room to improve while also considering that the head is ported by CNC at the factory and its already a great, smooth port.
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      08-05-2011, 08:48 AM   #18
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hmm the headers "look like" stock ones

here at the Nürburgring, there are 2 cars GT2 M3 from Schnitzer (BMW Motorsport)
you can walk into the box and see whilst the mechs are preparing the car.

it does not look like magic.

this is more the intake side, with the restictors.....
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      08-05-2011, 01:56 PM   #19
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how much weight do those Ti headers save?
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      08-07-2011, 12:38 PM   #20
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Not worth it for most
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