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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Single turbo manifold I did for a buddy of mine.



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      05-15-2015, 11:05 PM   #1
JerryT
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Single turbo manifold I did for a buddy of mine.

I normally build manifolds for evos and supras, but one of my close friends came to me with his 135i so I thought I would take a shot at it. After viewing several manifolds online for the car I decided on an idea. Space was very limited! I Did not think it would be possible for a ts top mount. Anyways enjoy the pictures. Let me know what you guys think as I am now interested in picking up a 135 myself.

Jerry T.
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Last edited by JerryT; 07-05-2015 at 08:51 PM.
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      05-15-2015, 11:24 PM   #2
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I came... twice.

Beautiful work.
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      05-15-2015, 11:28 PM   #3
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Also, how much did/would you charge for it? You can pm me if you want to keep it private. Ive had some custom manifolds made in the past and am always curious where prices stand. Wish my welds didn't look like a blind turrets guy did them
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      05-15-2015, 11:54 PM   #4
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Looks good
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      05-16-2015, 12:45 AM   #5
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Looks amazing
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      05-16-2015, 01:45 AM   #6
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Noice!!
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      05-16-2015, 02:03 AM   #7
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Quote:
Originally Posted by csu87 View Post
Also, how much did/would you charge for it? You can pm me if you want to keep it private. Ive had some custom manifolds made in the past and am always curious where prices stand. Wish my welds didn't look like a blind turrets guy did them
Wow.
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      05-16-2015, 06:59 AM   #8
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Looks nice. Where are the o2 sensors going?
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      05-16-2015, 08:21 AM   #9
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Looks nice. Where are the o2 sensors going?
x2
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      05-16-2015, 09:25 AM   #10
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Quote:
Originally Posted by JC335xi View Post
Looks nice. Where are the o2 sensors going?
I would assume in the DP post turbo like in the stock setup... That's where I would put them if I were building a single kit.
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      05-16-2015, 10:35 AM   #11
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Quote:
Originally Posted by JC335xi View Post
Looks nice. Where are the o2 sensors going?
Quote:
Originally Posted by The Convert View Post
x2
x3 beautiful manifold but its not going work unless you put 2 02 sensor pre turbo since DME needs to read the bank 1 and bank 2 AFR
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      05-16-2015, 10:46 AM   #12
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Quote:
Originally Posted by Holshot View Post
I would assume in the DP post turbo like in the stock setup... That's where I would put them if I were building a single kit.
Not possible, at least not as the factory DME wants to see it.

2 banks, one stream post-turbo. Car not happy.
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      05-16-2015, 11:42 AM   #13
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work of art. nice job
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      05-16-2015, 01:26 PM   #14
JerryT
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Thank you all.

There is a 02 bung behind each wastegate flange. One manifold is installed on my buds car with a pte turbo. Car pulls great compared to his stock turbos. He still needs to turn up the boost and do more tuning.
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      05-16-2015, 01:28 PM   #15
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Quote:
Originally Posted by Abacus38 View Post
x3 beautiful manifold but its not going work unless you put 2 02 sensor pre turbo since DME needs to read the bank 1 and bank 2 AFR
Yes i was told about this so we put 02 bung in pre turbo.
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      05-16-2015, 01:38 PM   #16
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Very nice work. There's a market for ST manifolds, but the last guy to do just manifolds apparently didn't hold up his end of the deal. Not that you have any intention of making more, just saying.

Can't wait for more pictures and video when it's installed!
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      05-16-2015, 09:19 PM   #17
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Quote:
Originally Posted by 135Pats View Post
Not possible, at least not as the factory DME wants to see it.

2 banks, one stream post-turbo. Car not happy.

Hey Pat, is that conjecture or has it actually been proven to be the case with the n54? Also, would a divided chambered DP help...? That's what my thought would be to maybe help.
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      05-16-2015, 09:23 PM   #18
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Quote:
Originally Posted by Holshot View Post
Hey Pat, is that conjecture or has it actually been proven to be the case with the n54? Also, would a divided chambered DP help...? That's what my thought would be to maybe help.
it's been proven. back in the day, AR design did a one off single turbo kit, that didn't divide the banks for o2 sensor placement, and it had all kinds of issues. HPF also did this, and the one kit they produced had issues, as well. o2 sensors need to be separated by bank on single turbo cars
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      05-16-2015, 11:15 PM   #19
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Thanks Bryce... Haven't there also been issues with guys burning through O2 sensors with the kits where they're mounted directly in the manifold as well?
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      05-17-2015, 01:45 AM   #20
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Quote:
Originally Posted by Holshot View Post
Thanks Bryce... Haven't there also been issues with guys burning through O2 sensors with the kits where they're mounted directly in the manifold as well?
Yup, with the oem O2s there have been issues. IIRC the swap is to NTK sensors which tolerate temps better.
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      05-17-2015, 02:40 AM   #21
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Car porn!!!!!
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      05-17-2015, 10:25 AM   #22
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Quote:
Originally Posted by Holshot View Post
Hey Pat, is that conjecture or has it actually been proven to be the case with the n54? Also, would a divided chambered DP help...? That's what my thought would be to maybe help.
It's where we are at right now. There's no alternative to pre-turbo placement, which sucks.

At some point someone will figure out how to place both widebands in the downpipe. I think Terry was going to poke around at some point on the matter.
Quote:
Originally Posted by Snertz View Post
Yup, with the oem O2s there have been issues. IIRC the swap is to NTK sensors which tolerate temps better.
Yep. Though i've managed to burn through an NTK one so who knows....
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