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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > BMW n55 new pure turbos (pure 500 and pure 750)

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      06-28-2024, 08:25 AM   #485
Ice_ken
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and what point do you upgrade the LPFP on M2 N55?
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      06-28-2024, 07:51 PM   #486
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Quote:
Originally Posted by Ice_ken View Post
and what point do you upgrade the LPFP on M2 N55?
When to upgrade the stock LPFP on a N55 EWG is usually related to the fuel mix and turbo fuel demands. The stock LPFP is pretty robust. ZM2 has been tracking his TTE460 turbo using E50 and approaching 500whp with a Dorch Stage1 HPFP and the stock LPFP. The same should go for the Pure500.

As soon as you want to use higher ethanol mixes from about E60 to full E85 (and get full performance out of them) you’ll need an LPFP upgrade. Ideally a Precision Raceworks Stage2.5v2 (Walbro 535). It’s rated at 675whp for pump gas and 600whp for E85.

Note: It’s not worth going for the Walbro 450. Capacity is much lower (2.2 vs 3.5 LPM) and the price difference is only $75.

https://precisionraceworks.com/produ...39318067445953

Tip: Order the Walbro 535 and have PR custom wire it for straight through wiring. And connect it to a Stage2 EKP from ET3 Design. It eliminates the BMW problems of overheating, scorching and melting.

https://www.et3design.com/stage%202.html
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      06-29-2024, 10:35 AM   #487
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Quote:
Originally Posted by Ice_ken View Post
and what point do you upgrade the LPFP on M2 N55?
my lpfp couldn’t keep up around e55 and around 550hp..went with stage 3 hobbs switch after talking with dorche.
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      06-29-2024, 11:57 PM   #488
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Is upgraded tmap going to be needed for say pure 500 and hpfp (DS15) and 98 RON fuel only no ethanol?
Custom or OTS tunes.

Thanks
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      06-30-2024, 12:12 AM   #489
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Quote:
Originally Posted by 3t3p View Post
Is upgraded tmap going to be needed for say pure 500 and hpfp (DS15) and 98 RON fuel only no ethanol?
Custom or OTS tunes.

Thanks
I don’t think so, unless you’re planning to run over 21psi
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      06-30-2024, 09:35 AM   #490
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Quote:
Originally Posted by Mr_M// View Post
I don’t think so, unless you’re planning to run over 21psi
I agree with this. I don't think you'd want to run over 21 psi with P500 on 93oct/98ron only, and if your boost is spiking above that level, it will still be obvious in the logs as the top of the peak will get clipped off. Seeing the clip should be enough for your tuner to identify and tune out the boost spiking without having to know the specific value to boost spiked to.
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      06-30-2024, 11:01 AM   #491
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Quote:
Originally Posted by wheela View Post
I agree with this. I don't think you'd want to run over 21 psi with P500 on 93oct/98ron only, and if your boost is spiking above that level, it will still be obvious in the logs as the top of the peak will get clipped off. Seeing the clip should be enough for your tuner to identify and tune out the boost spiking without having to know the specific value to boost spiked to.
It's good insurance to have, boost can change with ambient temps and altitude.
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Originally Posted by umizoomi View Post
As long 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      06-30-2024, 12:54 PM   #492
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Originally Posted by AmuroRay View Post
It's good insurance to have, boost can change with ambient temps and altitude.
True, it certainly doesn't hurt
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      06-30-2024, 08:20 PM   #493
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For those interested regarding the Dorsch stage 1 HPFP, I'm doing 537whp on my current set up with stock LPFP and 3.5 bar tmap on E50 😁 it flows more than I expected!
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      06-30-2024, 09:05 PM   #494
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Originally Posted by mledfo2 View Post
For those interested regarding the Dorsch stage 1 HPFP, I'm doing 537whp on my current set up with stock LPFP and 3.5 bar tmap on E50 😁 it flows more than I expected!
Turbo?
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Originally Posted by umizoomi View Post
As long 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      06-30-2024, 09:08 PM   #495
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Quote:
Originally Posted by AmuroRay View Post
Turbo?
I'm running the Bimmerhaus Performance stage 2, it's an amazing turbo, love it!
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      07-01-2024, 09:02 AM   #496
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Quote:
Originally Posted by mledfo2 View Post
I'm running the Bimmerhaus Performance stage 2, it's an amazing turbo, love it!
Never heard this brand before but I’m not a bmw guy. Checked their website and it seems they don’t ship to Canada :/
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      07-01-2024, 10:25 AM   #497
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Link to high res
Numbers are WHP/WNM torque. Dynojet dyno.


Blue: FBO OTS BM3 Stage 2 (another M2, not mine)
Red: Mine; FBO, Pure P500, Dorch DS15. OTS BM3 Stage 2 Full spec below
Green: Mine; FBO, Pure P500, Dorch DS15. HC Performance custom map.

2017 F87 M2 N55 manual:
Engine upgrades:
-Pure500 turbo
-Turbosmart DV11 divertervalve
-Dorch DS15 HPFP
-FTP inlet pipe
-DO88 intercooler, boost and charge pipe.
-N20 sparkplugs
-N20 3.5Bar mapsensor
-Speed engineering airscoop
-DO88 bigger oilcooler
-Wagner sportcat
-Tune by HCP

Fuel: EU 98 Shell V-Power -> US 93.

Comment by tuner: could use a bigger intercooler. Wagner EVO 2 competition for example.

Overal happy with the graph, looks like it makes tons of torque and power. Now just need to pick the car up.

Last edited by Ice_ken; 07-02-2024 at 03:07 AM..
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      07-01-2024, 10:34 AM   #498
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Quote:
Originally Posted by Ice_ken View Post

Link to high res

Blue: FBO OTS BM3 Stage 2 (another M2, not mine)
Red: Mine; FBO, Pure P500, Dorch DS15. OTS BM3 Stage 2 Full spec below
Green: Mine; FBO, Pure P500, Dorch DS15. HC Performance custom map.

2017 F87 M2 N55 manual:
Engine upgrades:
-Pure500 turbo
-Turbosmart DV11 divertervalve
-Dorch DS15 HPFP
-FTP inlet pipe
-DO88 intercooler, boost and charge pipe.
-N20 sparkplugs
-N20 3.5Bar mapsensor
-Speed engineering airscoop
-DO88 bigger oilcooler
-Wagner sportcat
-Tune by HCP

Comment by tuner: could use a bigger intercooler. Wagner EVO 2 competition for example.

Overal happy with the graph, looks like it makes tons of torque and power. Now just need to pick the car up.
Finally!! 25whp on the same tune - and on the custom tune over 430whp at 6500RPPM, impressive stuff.

PS to HP conversion (subtract 2.2% for SAE):

400whp stock turbo
425whp P500
448whp P500 HPFP custom tune

FYI bad advice on the intercooler - Evo2 is actually a lighter/same size intercooler compared to the Do88 (and will perform worse), you would want something bigger like the MAD/VRSF 6" race core.
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Originally Posted by umizoomi View Post
As long 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.

Last edited by AmuroRay; 07-01-2024 at 11:27 AM..
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      07-01-2024, 10:39 AM   #499
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Quote:
Originally Posted by CanadianM2 View Post
Never heard this brand before but I’m not a bmw guy. Checked their website and it seems they don’t ship to Canada :/
I just texted Dan, the owner and apparently they do ship worldwide! He said he's got a customer in Canada running the same turbo
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      07-01-2024, 10:54 AM   #500
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Quote:
Originally Posted by mledfo2 View Post
I just texted Dan, the owner and apparently they do ship worldwide! He said he's got a customer in Canada running the same turbo
Can you post your dyno? Was it on Pump?
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Quote:
Originally Posted by umizoomi View Post
As long 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      07-01-2024, 11:19 AM   #501
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Quote:
Originally Posted by AmuroRay View Post
Can you post your dyno? Was it on Pump?

Absolutely! This was on E50. I'm hoping to start a new thread on this turbo soon also.
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      07-01-2024, 11:35 AM   #502
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Quote:
Originally Posted by mledfo2 View Post
Absolutely! This was on E50. I'm hoping to start a new thread on this turbo soon also.
If you have any questions on his turbo just DM me, I can help. We are currently building a bigger one that will also be hybrid. My personal goal is to break the 600 WHP barrier on a stock manifold with a simple hybrid turbo. I feel like around 600 whp is the reasonable limit of these stock motors and transmissions before you need major upgrades. That is the reason for that goal.
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      07-01-2024, 11:43 AM   #503
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Quote:
Originally Posted by mledfo2 View Post
I just texted Dan, the owner and apparently they do ship worldwide! He said he's got a customer in Canada running the same turbo
When I enter my address and also my shops address it says they do not offer shipping to this location I’m in Nova Scotia
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      07-01-2024, 11:44 AM   #504
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Quote:
Originally Posted by Ice_ken View Post

Link to high res
Numbers are WHP/WNM torque. Dynojet dyno.


Blue: FBO OTS BM3 Stage 2 (another M2, not mine)
Red: Mine; FBO, Pure P500, Dorch DS15. OTS BM3 Stage 2 Full spec below
Green: Mine; FBO, Pure P500, Dorch DS15. HC Performance custom map.

2017 F87 M2 N55 manual:
Engine upgrades:
-Pure500 turbo
-Turbosmart DV11 divertervalve
-Dorch DS15 HPFP
-FTP inlet pipe
-DO88 intercooler, boost and charge pipe.
-N20 sparkplugs
-N20 3.5Bar mapsensor
-Speed engineering airscoop
-DO88 bigger oilcooler
-Wagner sportcat
-Tune by HCP

Comment by tuner: could use a bigger intercooler. Wagner EVO 2 competition for example.

Overal happy with the graph, looks like it makes tons of torque and power. Now just need to pick the car up.
Hey congratulations! 455whp using 93 pump gas is fantastic! I marked up your dyno graph (please see attachment) to illustrate the two things that jump out at me. FYI- I updated photo.

First, with the Pure500, you have the same stock turbo torque early on by 2500 rpm. So it’s equally responsive, plus then torque goes much higher.

Secondly, you have a big power increase but more importantly it stays high towards redline instead of dying off like the stock turbo.

Enjoy driving it!
Attached Images
 

Last edited by johnung; 07-01-2024 at 04:22 PM..
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      07-01-2024, 11:48 AM   #505
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The P500 compared to the stock turbo graph is exactly what I’ve been waiting for. Looks about a +/- 50whp gain with custom tune and HPFP on 93. Would be a little less on 91 which I would think could leave my car around the 430whp range which would be a nice bump in power for a inexpensive turbo
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      07-01-2024, 12:17 PM   #506
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Quote:
Originally Posted by johnung View Post
Hey congratulations! 455whp using 93 pump gas is fantastic! I marked up your dyno graph (please see attachment) to illustrate the two things that jump out at me.

First, with the Pure500, you have the same stock turbo torque early on by 2500 rpm. So it’s equally responsive, plus then torque goes much higher.

Secondly, you have a big power increase but more importantly it stays high towards redline instead of dying off like the stock turbo.

Enjoy driving it!


Quote:
Originally Posted by CanadianM2 View Post
The P500 compared to the stock turbo graph is exactly what I’ve been waiting for. Looks about a +/- 50whp gain with custom tune and HPFP on 93. Would be a little less on 91 which I would think could leave my car around the 430whp range which would be a nice bump in power for a inexpensive turbo

I have Winpep (the dynojet software) the metric horsepower and STD correction produce the "biggest numbers"

The conventional imperial horsepower and SAE produce "lower numbers" I included the conversion factor in my post - its about 5-8hp differences, and can be as much as 10-15whp+ depending on correction factor. I'm only noting this so when people don't get the "huge" numbers they see others get, they know why. Either way, there is about a 25whp difference at peak, and about 40whp difference at 6500RPM.

As for this dyno, the only reservations I have are what were the FBO stock turbo car's mods. Did it have an inlet?
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As long 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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