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      10-09-2014, 10:15 AM   #1
Andrew@ActiveAutowerke
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Active Autowerke | Performance Header Dyno Results

N52er's

For months now I have received pm after pm asking for a quality header that will not break the bank. Well, today I can finally tell you this dream is becoming a reality and we are combining it with the number 1 selling N52 software to match it.

As you all know a few months ago we purchased a N52 engine to fit a supercharger kit which we ended up scrapping due to price and transmission concerns. Instead of letting it rot with all the other engines we decided to try and make a Long tube header with a budget in mind. As you can see we went through a few designs before getting the fitment and clearances spot on.


Release date:
The header is now in the first phase of production and unfortunately I do not have an exact Eta but, we are shooting for less than 2 months.

Price: What you have all been waiting for! With this header project affordability was number one on our list and I think we have nailed it. I do not have a price set in stone yet but, I can tell you it will be less than $1000

Dyno Results: Car setup-1) stk intake manifold with charcoal air filter removed but stock factory paper filter ( we did not have a K+N drop in at the time to use

2) stock exhaust system from the header back. Meaning that the secondary cats were still in place along with stock rear muffler

-Note the car below sounds 100% stock with this setup.

I think the graph speaks for itself here so if you have any questions please ask below.

Bottom line- stock 328 auto 175 whp - 161 wtq

Middle line- AA Header, charcoal filter delete 198 whp - 179 wtq

Top line- AA header, AA software and charcoal filter 207whp - 192 wtq





Update 11/11/14
We received the final version yesterday fitted it up and we are ready to go full production. Expect 20-30 days until they are ready.

We may go with a matte color finish instead of the polished. Ill update the thread when I have a final decision.








Last edited by Andrew@ActiveAutowerke; 11-11-2014 at 10:32 AM.
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      10-09-2014, 10:40 AM   #2
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      10-09-2014, 10:55 AM   #3
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      10-09-2014, 11:08 AM   #4
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      10-09-2014, 11:17 AM   #5
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Hey andrew I am hoping if you can also put in a full header back exhaust and light weight wheels for another dyno pull . Sorry forgot to mention the 3stage im.
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      10-09-2014, 11:23 AM   #6
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I am astonished, 23whp, that is superb. Next question for me...

@Andrew: Does this design work for XI models? Are the OE headers different?

Tom
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      10-09-2014, 11:26 AM   #7
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Game changer..

Edit aw man these are catless.. Guess my secondaries are going back in
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      10-09-2014, 11:39 AM   #8
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Will these be safe to use with stock secondary cats? I've been researching headers for an ungodly amount of time and some warnings are that the exhaust without primary cats could somehow damage the secondary ceramic cats, (i.e. they'll burn up and not work). Anyway, this and ESS's supercharger will both be game changers! Well done AA!
Also, Andrew, will this in combination with the PE at least sound at bit louder? I do want a refined dB bump, even if only a little
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      10-09-2014, 11:42 AM   #9
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Quote:
Originally Posted by 328XIdiot View Post
I am astonished, 23whp, that is superb. Next question for me...

@Andrew: Does this design work for XI models? Are the OE headers different?

Tom
Tom,

Based on the oem header fitment our header should fit these cars plus the N51 models.

Part 18407596879 (Rmfd exhaust manifold with catalyst) was found on the following vehicles:
E82 128i Coupe, N52N (UP73) : Exhaust manifold with catalyst
E88 128i Convertible, N52N (UL73) : Exhaust manifold with catalyst
E90 323i Sedan, N52N (VH13) : Exhaust manifold with catalyst
E90 328i Sedan, N52N (VA37) : Exhaust manifold with catalyst
E90 328i Sedan, N52N (VA33) : Exhaust manifold with catalyst
E90 328xi Sedan, N52N (VC93) : Exhaust manifold with catalyst
E90N 323i Sedan, N52N (PG77) : Exhaust manifold with catalyst
E90N 323i Sedan, N52N (PG77) : Exhaust manifold with catalyst
E90N 323i Sedan, N52N (PG73) : Exhaust manifold with catalyst
E90N 323i Sedan, N52N (PG73) : Exhaust manifold with catalyst
E90N 328i Sedan, N52N (PH77) : Exhaust manifold with catalyst
E90N 328i Sedan, N52N (PH73) : Exhaust manifold with catalyst
E90N 328xi Sedan, N52N (PK73) : Exhaust manifold with catalyst
E90N 328xi Sedan, N52N (PK77) : Exhaust manifold with catalyst
E91 328i Touring, N52N (VS13) : Exhaust manifold with catalyst
E91 328xi Touring, N52N (VT73) : Exhaust manifold with catalyst
E91N 328i Touring, N52N (UT93) : Exhaust manifold with catalyst
E91N 328xi Touring, N52N (UU33) : Exhaust manifold with catalyst
E92 328i Coupe, N52N (WB33) : Exhaust manifold with catalyst
E92 328xi Coupe, N52N (WC33) : Exhaust manifold with catalyst
E92N 328i Coupe, N52N (KE33) : Exhaust manifold with catalyst
E92N 328xi Coupe, N52N (KF33) : Exhaust manifold with catalyst
E93 328i Convertible, N52N (WL13) : Exhaust manifold with catalyst
E93N 328i Convertible, N52N (DW33) : Exhaust manifold with catalyst
F25 X3 28iX SUV, N52N (WX53) : Exhaust manifold with catalyst
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      10-09-2014, 11:44 AM   #10
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Quote:
Originally Posted by dtea604 View Post
Hey andrew I am hoping if you can also put in a full header back exhaust and light weight wheels for another dyno pull . Sorry forgot to mention the 3stage im.
We have already done this with but with a 6mt and a supersprint header. The customer posted his results around here somewhere. Made excellent power.
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      10-09-2014, 11:55 AM   #11
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Subscribed!

Cheers!
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      10-09-2014, 11:56 AM   #12
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Maybe it is possible to sniff around 300hp at the crank..
3 stage plus tune will bring it up to 255
Optimized tune plus headers around+30
exhaust/intake- ~10
Silicone intake hose- 1 hp

...things are looking up!!
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      10-09-2014, 11:58 AM   #13
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Quote:
Originally Posted by Nordkeyz73 View Post
Will these be safe to use with stock secondary cats? I've been researching headers for an ungodly amount of time and some warnings are that the exhaust without primary cats could somehow damage the secondary ceramic cats, (i.e. they'll burn up and not work). Anyway, this and ESS's supercharger will both be game changers! Well done AA!
Also, Andrew, will this in combination with the PE at least sound at bit louder? I do want a refined dB bump, even if only a little

I don't see why it wouldn't work with secondary cats.. Our test car has a full stock exhaust
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      10-09-2014, 11:59 AM   #14
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Quote:
Originally Posted by Emozoo View Post
Maybe it is possible to sniff around 300hp at the crank..
3 stage plus tune will bring it up to 255
Optimized tune plus headers around+30
exhaust/intake- ~10
Silicone intake hose- 1 hp

...things are looking up!!

Well our dyno is exactly 10% lower than a dynojet so the car is really putting down 228 whp. With a stage 3 manifold and exhaust I count totally see 255 whp fbo N/A.
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      10-09-2014, 12:01 PM   #15
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Did you guys work up a new tune for the headers, or use the current stage 2 tune you sell?

Cheers!
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      10-09-2014, 12:03 PM   #16
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I'm sure the answer will be 'no', but will these fit UK right-hand drive models (steering column on the 'wrong' side)?
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      10-09-2014, 12:09 PM   #17
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Quote:
Originally Posted by Phil325i View Post
I'm sure the answer will be 'no', but will these fit UK right-hand drive models (steering column on the 'wrong' side)?
As above, unlikely to fit a UK 325i (N53) 3.0litre, right?
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      10-09-2014, 12:30 PM   #18
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Wow. Can't wait to see that car after 3stage intake and full exhaust.
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      10-09-2014, 12:34 PM   #19
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Quote:
Originally Posted by Clammy View Post
Did you guys work up a new tune for the headers, or use the current stage 2 tune you sell?

Cheers!

This was custom software made specifically for our header.
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      10-09-2014, 12:34 PM   #20
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Quote:
Originally Posted by ChrisN53 View Post
As above, unlikely to fit a UK 325i (N53) 3.0litre, right?

Send me your vin please.
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      10-09-2014, 12:37 PM   #21
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This is so great! Thanks AA!
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      10-09-2014, 12:38 PM   #22
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That's a nice bump in power for the N52!
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