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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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      06-07-2013, 03:36 PM   #1
hetzle
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Pure Turbos N55 single turbo upgrade

http://www.pureturbos.com/store/bmw-...o-upgrade.html

My buddy linked this to me today, first time I've head anything about it but it looks promising!

EDIT- Results are in, people!

Shop car: (WHP, MUSTANG DYNO, V2 turbo with slight modifications over the V1, same price)



91 pump
map 2
went from 297whp to 342whp (at same boost levels)

297whp was 72 degree ambient
342whp was 88 degree ambient


Customer car (Darkhold): (CRANK HP, V1 turbo)
Hi Guys,

As promised some dyno results. Let me start by saying that I am impressed with the results. The car pulls much stronger towards 6500 rpm. And the difference with stock turbo with meth on map3 with 40 meth adder is huge.

Allthough the car was not making the same boost as it makes consistently on the street and jb4 target was not doing what I set it to (I guess heat issue) the best result was 446 bhp and 647nm. So the max boost dyno was actually not reaching the target. Hence my daily boost map is close to the result of the max boost map. I also dynoed on 15 psi boost map for reference and while midrange is about 20/30 bhp less, topend is still pretty strong.

Compare between max boost, daily map and lower boost runs:


JB4 logs of the above runs:
MAX

Daily

15 psi

And for reference the csv's as well:
http://users.telenet.be/darkhold/pure_daily.csv
http://users.telenet.be/darkhold/pure_max.csv
http://users.telenet.be/darkhold/pure_15psi.csv
As you can see the car was not quite matching the high boost map. However on the street it can match these boost levels consistently. So maybe this means a few more bhp real world


Compare between max boost, stock map3 40 meth adder and stock:

Unfortunately the stock map3 was not till redline but as you can see bhp goes downhill after 5600 rpm.
JB4 log of the map3 run:

And the csv:
http://users.telenet.be/darkhold/stock_map3.csv

Overall I couldnt be happier with the result. Comparing stock, map3 meth and the pure turbo there really is a big difference.

Any questions ---> shoot


BMS graph (WHP, V1, I can't find a list of mods but I'm guessing it's FBO + E40) :

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Last edited by hetzle; 06-13-2014 at 12:49 PM. Reason: Numbahs
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      06-07-2013, 04:13 PM   #2
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Maybe the competitor that VTT has been referencing. Somehow thinking that that price will work itself upward as development continues.
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      06-07-2013, 05:45 PM   #3
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I'm pretty sure it's not the referenced member. Go on n54tech to see the other competitor. This looks similar but no turbine or ball bearing option. Glad we are getting options!
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      06-07-2013, 08:56 PM   #4
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Quote:
Originally Posted by CombatNinja
Maybe the competitor that VTT has been referencing. Somehow thinking that that price will work itself upward as development continues.
no. its probably Rob Beck (RB)
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      06-07-2013, 11:15 PM   #5
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Yeah pretty sure VTT is the only option (right now) but the N55 guys should be pretty excited.. I know I would be.. Def going VTT stage 2 for the N54 plus e85 in the near future
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      06-09-2013, 09:17 AM   #6
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Early indications are that this is the approach Dinan is taking with their N55 program. Stock turbo with upgraded compressor wheel.
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      06-09-2013, 08:56 PM   #7
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Yup Dinan claims their S3 (compressor wheel upgrade) will get over 400whp... I say that's not bad if they would give a fair price, else save your money and replace the entire turbo with one of Vargas
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      06-09-2013, 08:58 PM   #8
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Quote:
Originally Posted by melloww22
Yup Dinan claims their S3 (compressor wheel upgrade) will get over 400whp... I say that's not bad if they would give a fair price, else save your money and replace the entire turbo with one of Vargas
Yep- I'm holding out for Dinan- at least I'll have a warranty- much like all my other Dinan stuff.
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      06-10-2013, 02:03 AM   #9
hetzle
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Quote:
Originally Posted by melloww22 View Post
Yup Dinan claims their S3 (compressor wheel upgrade) will get over 400whp... I say that's not bad if they would give a fair price, else save your money and replace the entire turbo with one of Vargas
IIRC they were making crank HP claims throughout the whole video
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      06-10-2013, 10:47 AM   #10
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I dont even want more hp. I just want the hp to stay to redline.
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      06-10-2013, 11:07 AM   #11
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Yeah, what he said.
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      06-10-2013, 11:53 AM   #12
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That said, Dinan is also known for working closely with BMW and producing power gains reliably, while keeping all the other OEM parts and systems intact. This is why Dinan will offer a warranty matching the factory, and also why you'll pay more for that extra peace of mind. For us folks who don't want to risk blowing our warranty, Dinan will be an option.

For those that want the added power and aren't concerned with warranty so much, or are out of warranty already, looks like VTT would be an option.

In any case thanks to all for making this possible- your efforts and development are eagerly being waiting upon. It is an exciting time for the N55 indeed.
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      06-12-2013, 07:12 PM   #13
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What types of gains did you experience with just the compressor wheel?
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      06-12-2013, 08:54 PM   #14
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Quote:
Originally Posted by Vargasturbotech View Post
We haven't. We chose to go thise route instead of doing a stage 1 option first and a stage 2 later. Mainly because we know the stage 1 is not going to be enough. The turbine wheel seems like one of the main limiting factors in these things, just judging off its small size. Going to a bigger compressor would add some extra airflow but the gains didnt seem worth it to us. We just finished our Ford Ecoboost upgraded turbo prototypes and one is forward and one is reverse (like the N55) for the V6 and we went stage 1 on those because the stock turbine wheels were sized very nicely and the compressor wheels were very small. This is an indicator that a stage 1 type upgrade will net quite a good bit of HP. Hope that helps explain why we went this direction first.
You chose to skip stage 1, which you refer to as just a compressor upgrade. Did you dyno the upgrade and see small gains, or did you assume it wouldn't be worth it because the turbine size was just as much of an issue.
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      06-13-2013, 01:36 PM   #15
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Quote:
Originally Posted by evo335xi View Post
You chose to skip stage 1, which you refer to as just a compressor upgrade. Did you dyno the upgrade and see small gains, or did you assume it wouldn't be worth it because the turbine size was just as much of an issue.
I have answered this question 3 times now. Please read above.
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      11-18-2013, 06:26 PM   #16
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Ca we get more info about this upgrade mr pure turbo?
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      11-18-2013, 07:26 PM   #17
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Upgraded compressor wheel correct? Machined housing but stock turbine wheel? Probably 20-30whp with less drop off I'd imagine. Awesome to have this option too!
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      11-18-2013, 10:33 PM   #18
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when do you expect to have some figures to show us?
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      11-19-2013, 09:31 AM   #19
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It says $995 on the website, pretty nice deal! I am curious on the results and to see how much the stock turbine chokes things at higher RPM.

Pure - Any plans on a stage 2 to compete with the Vargas?
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      11-19-2013, 09:46 AM   #20
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Garage List
Lets hope!
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      11-19-2013, 10:21 AM   #21
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So if you purchase the upgrade altogether it's 1895, versus 995 for submitting your own, or am I off base?
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      11-19-2013, 07:26 PM   #22
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Interested in how this turns out, looking forward to what Terry can do with it!
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