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      01-23-2018, 11:55 AM   #1
Apex1.0
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N55 Turbo Upgrade Options

Yes I have searched, and I know there are options from the following vendors:

Pure Turbo
VTT
Steam Turbo
Big Boost

So my goal is an honest, reliable and consistent 400whp. I would also like the power to pull in the higher rpm range than stock. This would be on 93 octane. This setup also must handle tracks days however it can be de-tuned if needed.

Turbo replacements seem to come in two flavors. 1, where the manifold and turbo housing stay and only the compressor and turbine wheel are replaced. 2, where the entire turbo frame and manifold are replaced.

Typically it seems most "stage 1" turbos are the first type and all "stage 2" or higher are the second type. So here are my questions:

How do the two types compare regarding installation difficulty? How much time is saved by going with just the type 1?

How much HP will the stock fuel system support?

Will the type/stage 1 type turbo replacements fulfill my hp goals?


Finally, what option would you go with and why?

Thanks,
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      01-23-2018, 02:14 PM   #2
Gizmo135i
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Well you know my opinion from your other thread, my mods are:
Pure stage 2
Pure inlet pipe
ER intercooler
ER charge pipe
VRSF down pipe
BMW Performance exhaust
****** cat sim
Fuel it stage 2 fuel pump
MHD tuner w/ wedge 93 octane flash

Car pulls hard nicely all the way to red line... honestly if your going to go through the trouble, might as well go all the way with the stage 2... pure has a great track record for reliability as well.

Also I highly recommend wedge Tuning on mhd, car never ran right with jb4.
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      01-23-2018, 04:41 PM   #3
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Did you do the work yourself? I might of missed it but did you ever dyno?
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      01-24-2018, 09:44 PM   #4
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Quote:
Originally Posted by Apex1.0 View Post
Did you do the work yourself? I might of missed it but did you ever dyno?
Yes I did everything myself... I am a Bmw tech though. I havnít had it on a dyno but I would guesstimate based on how it pulls and what Iíve read I should be in the 450whp range. Once I add direct port meth Iím hoping to be closer to 520whp... Iíll probably dyno it after that

I would highly recommend Wedge as a tuner also, he had my car running great after only a few revisions. I worked with other tuners and also tried the JB4/backend flash route and the car was never right.
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      01-25-2018, 03:55 PM   #5
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Searching on the E90 forums, there does not seem to be too much love for the type/stage 1 turbo upgrades. Pretty much everyone says go right to stage 2.

How much HP can the stock fuel system support?
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      01-30-2018, 03:12 PM   #6
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hoping to save enough doll hairs to do the Pure Stage 2 and supporting mods soon
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      01-30-2018, 04:50 PM   #7
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stage 1 is what the should have had from the factory. pulls hard to redline, and really opens up the car for a good 30whp more throughout the band.

people say to go straight to stage 2 because you'll get power hungry and want more.

I had stage 2 in my 135 and loved it. but I had meth. stock fuel system (only 93) will run you into 450ish whp range. expect to add supplemental fuel after that if you're looking to keep things working right. I had meth in my car (kit still for sale )
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      01-30-2018, 10:19 PM   #8
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Some development available too:

http://www.e90post.com/forums/showthread.php?t=1461029
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      01-31-2018, 09:42 AM   #9
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It's too bad it's such a pain to fit the EFR series turbo's on these cars.
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      02-01-2018, 02:47 PM   #10
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Anyone on here done the Speedtech kit yet?

https://www.speedtech.com/bmw-n55/
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      02-02-2018, 09:28 PM   #11
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Quote:
Originally Posted by sbrach View Post
Anyone on here done the Speedtech kit yet?

https://www.speedtech.com/bmw-n55/

Is that for the E or F chassis cars? Dude thats so tempting
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      02-05-2018, 02:17 PM   #12
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Quote:
Originally Posted by FrostyDC4 View Post
Quote:
Originally Posted by sbrach View Post
Anyone on here done the Speedtech kit yet?

https://www.speedtech.com/bmw-n55/

Is that for the E or F chassis cars? Dude thats so tempting
There's versions for both chassis. I am feeling the temptation also
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      02-05-2018, 08:01 PM   #13
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Quote:
Originally Posted by BoosTonian View Post
stage 1 is what the should have had from the factory. pulls hard to redline, and really opens up the car for a good 30whp more throughout the band.

people say to go straight to stage 2 because you'll get power hungry and want more.

I had stage 2 in my 135 and loved it. but I had meth. stock fuel system (only 93) will run you into 450ish whp range. expect to add supplemental fuel after that if you're looking to keep things working right. I had meth in my car (kit still for sale )
I think to get more whp, you'll need to increase the engine size. My dad's 496 stroked big block only uses 93 octane. We will add a supercharger this spring and still only use 93 octane. I'm sure you can get around 500ish without the need for meth.
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      02-06-2018, 07:13 PM   #14
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Our 2 most popular options are Pure and Vargas.
We never had an issue with either one
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      02-10-2018, 10:36 PM   #15
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not to hijack the thread, but the pure stage 1 require any supporting mods on an otherwise stock car?
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      02-10-2018, 11:37 PM   #16
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Quote:
Originally Posted by captain slowly View Post
not to hijack the thread, but the pure stage 1 require any supporting mods on an otherwise stock car?
It does not require any supporting mods.
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      02-11-2018, 01:01 PM   #17
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Quote:
Originally Posted by mike@x-ph.com View Post
It does not require any supporting mods.
Sweet. How about a retune? It currently has the PPK1.
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      02-11-2018, 03:08 PM   #18
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Quote:
Originally Posted by captain slowly View Post
Sweet. How about a retune? It currently has the PPK1.
It does not require a retune, of course if you go with a more aggressive tune (jb4 or Flash) you will make more power.
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      02-14-2018, 01:15 PM   #19
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High recommend Pure for the N55.
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      02-15-2018, 11:39 AM   #20
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I went with the Stage 1 pure turbo and I have no complaints. I also have the ppk flash works fine without jb4. But with some e85 and custom map 6 the car transforms.
I would suggest you get a Stage 2 because now Iím craving more power but pure doesnít give you credit towards your Stage 2 purchase anymore if you have a Stage 1. Didnít find that out until I was ready to upgrade.
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      02-15-2018, 12:26 PM   #21
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Quote:
Originally Posted by 135 TING View Post
I went with the Stage 1 pure turbo and I have no complaints. I also have the ppk flash works fine without jb4. But with some e85 and custom map 6 the car transforms.
I would suggest you get a Stage 2 because now Iím craving more power but pure doesnít give you credit towards your Stage 2 purchase anymore if you have a Stage 1. Didnít find that out until I was ready to upgrade.
A lot of guys that ask we tell them to go to right to stage 2 as you can always tune conservatively but you have plenty of power available on tap if you ever want more.

If you interested in Stage 2 and currently have Stage 1, let me know and I'll see if I can crunch some numbers for you.
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