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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > F30 N55 PURE stage 2 turbo dyno results
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      04-12-2015, 01:37 PM   #23
gklhso
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i already blend 25% xylene to 91-92 octane, this should get me to around 97 octane, also running cm10 nozzle with 80/20 meth to water, but what is the max safe range for stock fueling system and what upgrades could be done to increase fueling? something like a second set of injectors? inline pump? changing pump? i want to understand! also are the limits far less to the n54? internals are cast vs forged in n54? or is that a myth ?
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      04-12-2015, 04:51 PM   #24
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e85 is not available in egypt and our 95 octane was tested to only have 91 octane i use toluene and xylene to raise this figure to 97, also im not planning to lose the meth or anything it is great and i love it, i have the bms water meth which is controlled by the jb4, and i have the 2.3 gal tank which is big enough and also tolerates 100% methanol, i am going to read more about the stuff you mentioned in your last comment, but for now the price of the stage 2 turbo is very expensive 2 me but i am sure ill get it one day ! hope the price drops a bit over time or may be support my project as the first in Egypt by the way we have a great tuner here who is able to remap the ECU as i know this is a must when upgrading the turbo, another question please what is the highest possible output of stage 1 turbo?
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      04-12-2015, 05:35 PM   #25
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to be honest i am comparing the stage 2 to a completely custom setup in terms of cost, reliability and power
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      04-12-2015, 07:34 PM   #26
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no i do not agree with you, i can fabricate a complete exhaust manifold for less than 200 usd out of 304 stainless steel, a precision turbo would be around 700 to 800 usd, already have piping hoses and clamps, wastegate is not expensive and so a blow off valve, whats expensive then ?
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      04-13-2015, 12:11 AM   #27
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but at the end of the day... there is nothing better like plug and play ! ill think and let you know when i am ready to get the stage 2 turbo
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      04-13-2015, 01:42 AM   #28
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Originally Posted by gklhso View Post
but at the end of the day... there is nothing better like plug and play ! ill think and let you know when i am ready to get the stage 2 turbo
Also I went down the tuning part via DME. There is a 14.5 psi boost limiter in the DME. And after 4500-4800 rpm it will drop down further. Even if you up the load you won't see more boost. Untill they find the limiter you can only tune the car via JB4.
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      04-13-2015, 03:07 AM   #29
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i am running jb4 already
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      04-14-2015, 04:31 PM   #30
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I saw this car at EAS and those are good numbers. Time will only tell what the car can do. FBO F30 V stock M3 ya I can see that. FBO vs JB4 m3 and its a done deal.
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      04-15-2015, 02:52 PM   #31
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Wow...
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      04-15-2015, 04:27 PM   #32
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Impressive numbers. To note, ethanol is still very limited in supply & not readily accessible to most folks.
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      04-15-2015, 04:27 PM   #33
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Wow....that's insane...
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      04-15-2015, 04:31 PM   #34
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Quote:
Originally Posted by Dosturbos
Quote:
Originally Posted by auf Deutsche View Post
Yeah well, head over to the F80 post. God forbid you draw comparisons between the F3x and F8x. It's blasphemous to mention them in same universe, let alone the same thread.

It's cool to see the N55 perform at such a high level.
I used to hate on E9X M3's all the time in my FBO 135i. It was hilarious to watch the M3 drivers get so pissed.
At the end of the day our cars have sort of the same inline 6 with a turbo(s) on it.
Methanol, E85 and bigger turbos can do a lot to level the playing field.
As some who owned an E92 M3 and owns a 1M... I find it amusing that there are M3 drivers that felt any shame losing to a FBO N54 over a short distance.

Without substantial, costly modification the 135i would likely be lapped by an M3 on proper road course (assuming the 135i managed stay out of limp mode long enough to complete more than a handful of laps).

Two great- but very different- vehicles.

FWIW- There are likely K04'd GTIs that would beat your FBO N54 in a straight line...but I can't imagine you'd be that upset about it.
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      04-15-2015, 05:04 PM   #35
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One day... My M235i will put out this HUGE amount of power! Amazing job btw!
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      04-15-2015, 05:08 PM   #36
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holy shit!
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      04-15-2015, 05:30 PM   #37
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Quote:
Originally Posted by skitsos View Post
One day... My M235i will put out this HUGE amount of power! Amazing job btw!
haha,Me too
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      04-15-2015, 06:21 PM   #38
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fantastic! only now would I ever consider an N55. Lets see what fuelit can do with E85 instead of Meth!
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      04-15-2015, 06:52 PM   #39
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Quote:
Originally Posted by auf Deutsche
F80 killer
I'd like to see it run mine, I'm sure you'll share a different sentiment.
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      04-15-2015, 06:52 PM   #40
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Amazing numbers! Congrats!

Quote:
Originally Posted by auf Deutsche View Post
F80 killer
I'm just going to leave this here....

http://f80.bimmerpost.com/forums/sho....php?t=1031602

We're all in the same family
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      04-15-2015, 06:56 PM   #41
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Congrats! Amazing numbers! But the dyno plot you posted shows 523, not 528... Semantics, I know... What's 4 HP when you're pushing well over 500
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      04-15-2015, 07:06 PM   #42
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Amazing numbers! Congrats!



I'm just going to leave this here....

http://f80.bimmerpost.com/forums/sho....php?t=1031602

We're all in the same family
Yeah, that thing is filthy. I should've been more specific.....stock M3 killer
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      04-15-2015, 07:12 PM   #43
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Quote:
Originally Posted by FC4
Wow...very nice. Shows how severely turbo-limited these cars are stock when you can gain upwards of 250 RWHP with even a mild turbo.

Quote:
Originally Posted by auf Deutsche View Post
F80 killer
Sentiment like this among different trim-levels always boggles my mind...
Now I've truly heard it all.
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      04-15-2015, 07:14 PM   #44
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Fantastic - congratulations!!
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