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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Pure Turbos N55 single turbo upgrade



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      01-18-2014, 06:48 PM   #45
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Nice!
That's what I wanted to hear
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      01-18-2014, 07:35 PM   #46
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But a back end flash would be necessary correct? Jb4 will make the power with boost but the air-fuel/timing would not be able to be controlled?
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      01-19-2014, 09:49 AM   #47
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This is so exciting. Keep us posted!!
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      01-19-2014, 12:39 PM   #48
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Cant wait
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      01-19-2014, 02:19 PM   #49
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When will tuning/dyno be complete?!?
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      01-19-2014, 04:22 PM   #50
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Well I guess what N55 guys need is being able to go to 6.5k rpm instead of having to shift at 5.8k. I would be looking for an upgrade that does above and gives me 50-70 hp over jb4 map2 on 93 octane.

And all this on an F series car
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      01-20-2014, 11:27 AM   #51
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Oh boy...
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      01-21-2014, 03:34 PM   #52
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Quote:
Originally Posted by Darkhold View Post
Well I guess what N55 guys need is being able to go to 6.5k rpm instead of having to shift at 5.8k. I would be looking for an upgrade that does above and gives me 50-70 hp over jb4 map2 on 93 octane.

And all this on an F series car
Agreed. Its nice to have the power on 93 octane. E85 is good but a pain to get sometimes!

Any word on this upgrade?
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      01-21-2014, 05:46 PM   #53
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Why exactly wouldn't the Cobb AP work for this mod? Get a protune on a dyno and go. I don't see the problem.
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      01-21-2014, 05:57 PM   #54
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Because COBB doesn't support the N55s built after 03/2012. BMW has protected the DME with a TriCore Security Setup.
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      01-24-2014, 02:37 PM   #55
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So what happened here? Vargas and Pure's posts were deleted and no updates
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      01-24-2014, 03:10 PM   #56
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Quote:
Originally Posted by marCOCOpuffs
So what happened here? Vargas and Pure's posts were deleted and no updates
Some of those posts had solid information though. Still don't see why they got deleted despite the high levels of sarcasm. Interested to know about the truth behind the VTT upgrade regarding the possible reverse rotation "issue", several comments were deleted including Rob's and other forum members.
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      01-24-2014, 04:36 PM   #57
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I am guessing VTT threatened to pull their business if PFT aired "dirty laundry" like the wrong threading on the reverse rotation shaft. Pure speculation on my part.
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      01-24-2014, 04:42 PM   #58
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There's another post on bimmerbuuust. Idk... Don't really care about the beef. Just want to know about the results
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      01-24-2014, 04:57 PM   #59
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Quote:
Originally Posted by marCOCOpuffs View Post
There's another post on bimmerbuuust. Idk... Don't really care about the beef. Just want to know about the results
Yeah, that was me. Can't stand that board. Long live E90!
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      01-24-2014, 07:37 PM   #60
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As far as I know "someone" stated that the reverse rotation shaft @ the N55 Stage 2 Turbos from Vargas aren't made properly so they - may or may not - be likely to fail.

Pure Turbos:
Really excited for your turbo. Any updates?
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      01-28-2014, 02:44 AM   #61
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Quote:
Originally Posted by 335iFFM View Post
As far as I know "someone" stated that the reverse rotation shaft @ the N55 Stage 2 Turbos from Vargas aren't made properly so they - may or may not - be likely to fail.

Pure Turbos:
Really excited for your turbo. Any updates?

We recorded some datalogs on our customer's Stage 1 car, and they have been sent to Terry today. So tuning, then dyno...

We just bought a '11 335i N55 shop car. So we will provide more results once our Stage 1 turbo is also installed and tested on our shop car.

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      01-28-2014, 04:50 AM   #62
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Nice!
Really hoping for a better top end
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      01-28-2014, 11:39 AM   #63
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Quote:
Originally Posted by 335iFFM View Post
Nice!
Really hoping for a better top end
FWIW: Our customer with the Stage 1 turbo said:

"The car has so much !@#$ing balls on the top end even on map two. Raced my buddies 09 GTR with intake and exhaust and walked him. Used to barely keep up with him."

This is no result or data of any kind, but it got us excited when we heard it. It sounds positive so far...
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      01-28-2014, 12:06 PM   #64
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N55 GTR killer... Hmmmm. Sign me up
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      01-28-2014, 12:16 PM   #65
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Quote:
Originally Posted by marCOCOpuffs View Post
N55 GTR killer... Hmmmm. Sign me up
bad gtr driver? hmm
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      01-28-2014, 12:20 PM   #66
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Rwd jdm gt-s wih the RB25 for sure... Haha jokes aside: really looking forward to some empirical data. Any word on when tuning will be complete?
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