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      07-19-2011, 10:09 PM   #1
eboosted
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Upgraded turbos for the 1M?

Are there any turbo kits available for the 1M, are those N54 kits suitables for the 1M?
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      07-19-2011, 11:56 PM   #2
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      07-20-2011, 01:13 AM   #3
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RB turbo
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BMW 135i N54 TWIN TURBO
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      07-20-2011, 02:30 AM   #4
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Rb turbos are your best bet right now and most guys are easily hitting over 500whp I believe.
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      07-20-2011, 08:54 AM   #5
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Quote:
Originally Posted by Tony135 View Post
Rb turbos are your best bet right now and most guys are easily hitting over 500whp I believe.
I found a dyno with 443.49rwhp but it was 99 degF on the dyno and he was on 100oct. Not bad at all.


http://www.***********.com/showthrea...ot-dyno-reults
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      07-20-2011, 10:09 AM   #6
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Call up Turbonetics direct, im sure they can sort anyone out. And if your willing to hand over your car, im sure you'll get a free kit out of it for the price of their R&D usage.
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      07-20-2011, 07:20 PM   #7
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I'm a fan of ASR personally
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      08-22-2011, 07:25 PM   #8
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Does anybody know if the turbos in the 1M are the same as those in the 135i?
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      08-22-2011, 07:30 PM   #9
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2011 or 2012?
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      08-22-2011, 07:36 PM   #10
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I have a 2008 135i. Are the turbos in the 1M the same as mine?
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      08-22-2011, 08:05 PM   #11
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Wow really, common guys use search before posting, it helps a lot.

The N54B30 is unchanged between the 135 and the 1M, they both use the same Mitsubishi TD03 turbos.

Don't buy ASR. They are a highly shady company. Look at the big thread on N54tuning.
RB and RD turbos are the best options right now. You'll be running 500WHP all day.
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      08-22-2011, 09:04 PM   #12
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Quote:
Originally Posted by BrokenVert View Post
Wow really, common guys use search before posting, it helps a lot.

The N54B30 is unchanged between the 135 and the 1M, they both use the same Mitsubishi TD03 turbos.

Don't buy ASR. They are a highly shady company. Look at the big thread on N54tuning.
RB and RD turbos are the best options right now. You'll be running 500WHP all day.
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      08-22-2011, 11:32 PM   #13
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I really have no idea how the twin scroll single turbos work so don't chew me out too much, ... buuuut would it be possible to twin turbo a 1M by using two of those
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      08-22-2011, 11:52 PM   #14
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The N54 in the 1M is a bi turbo
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      08-22-2011, 11:57 PM   #15
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haha sorry if it came off a bit confusing, but i meant to swap out the stock normal turbos for two twin scoll turbos
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      08-23-2011, 12:26 AM   #16
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Quote:
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haha sorry if it came off a bit confusing, but i meant to swap out the stock normal turbos for two twin scoll turbos
Wait, what?
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      08-23-2011, 12:27 AM   #17
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you guys are just cruel. Time to whip out the Boosting excel sheet i had for my s2000... time to budget a upgraded turbo build for the 1M
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      08-23-2011, 12:38 AM   #18
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Quote:
Originally Posted by DooBs View Post
I really have no idea how the twin scroll single turbos work so don't chew me out too much, ... buuuut would it be possible to twin turbo a 1M by using two of those
no you dont. Two Twinscroll turbos would effictively be a quad turbo.

and 6 does not go into 4

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The N54 in the 1M is a bi turbo
No it isnt. Its a twin turbo...theres a difference

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Originally Posted by DooBs View Post
haha sorry if it came off a bit confusing, but i meant to swap out the stock normal turbos for two twin scoll turbos
Then youd have some massive issues

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Originally Posted by Nater View Post
Wait, what?
Exactly. Lots of misinformation on this thread.









Dont post things as "fact" if they arent.
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      08-23-2011, 04:16 AM   #19
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No it isnt. Its a twin turbo...theres a difference
and the difference between a bi-turbo and a twin turbo is what exactly?
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      08-23-2011, 07:08 AM   #20
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^^^In American english a bi-turbo would be sequential instead of parallel or "twin" turbos.....kinda like Siamese twins versus actual separate identical twins (in that Siamese twins share some "piping"...LOL)
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      08-23-2011, 10:05 AM   #21
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Quote:
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and the difference between a bi-turbo and a twin turbo is what exactly?
A biturbo arraignment has two different sized turbos (usually a small one for low engine speed and a large one for the upper range) that share the same exhaust piping so they are known as sequential, because the large one is downstream of the small one (several BMW diesels are bi turbos)

This is similar to the idea of a twin scroll turbo like on the N55, but bot quite as both the small and large turbo impellers share the same housing in a twinscroll. Think of a twinscroll as a tightly packaged Bi Turbo

A twin turbo has two identical turbos that get fed off of two different headers. Twin turbos on a 6 are two banks of 3 cylinders, twins on an 8 pot are two banks of 4 cylinders, etc...




And you can't simply swap turbos on the N54. The turbo housings are cast into the header. So you Either need a custom header made or the second, easier option, which is to put a more efficient turbo possible into the stock housing (this is what ASR and RB do)

But again do not give money to ASR! They are thieves!
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      08-23-2011, 12:55 PM   #22
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So why couldnt you have one twin scroll on each bank of 3? twinbiturbo?
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