N55 PureTurbos Intake Inlet pipe

loesch · 01-30-2015, 10:30 AM

Quote:

Originally Posted by tke344

I don't know that the MAF sensor would even matter so long as it's still mounted properly after the filter. It's just reading flow and temperature. Seems like WGDC will be what is affected most. The N54 needs much less WDGC after similar upgrades to achieve the same boost.

Hmmm. Here's my thinking. The volume inside a larger diameter intake tube would slow down the air passing over the MAF sensor. Wouldn't that cause the DME to believe less air is going in to the engine and cause some issues at idle / partial throttle?

JETmn · 01-30-2015, 10:49 AM

Quote:

Originally Posted by loesch

Hmmm. Here's my thinking. The volume inside a larger diameter intake tube would slow down the air passing over the MAF sensor. Wouldn't that cause the DME to believe less air is going in to the engine and cause some issues at idle / partial throttle?

So long as the MAF size isn't changing, that will be fine. The problem is making sure you don't have any turbulence at the MAF. I have run in to this with other platforms and that is why the transition in the stock intake is so gradual. If you get turbulence then your readings get thrown off.

Keep us posted Hutch! The pic really doesn't look like a big difference in actual inlet size, but the pipe itself looks less restrictive.

rhm135 · 01-30-2015, 10:57 AM

Quote:

Originally Posted by JETmn

So long as the MAF size isn't changing, that will be fine. The problem is making sure you don't have any turbulence at the MAF. I have run in to this with other platforms and that is why the transition in the stock intake is so gradual. If you get turbulence then your readings get thrown off.

Keep us posted Hutch! The pic really doesn't look like a big difference in actual inlet size, but the pipe itself looks less restrictive.

Adding a "honeycomb airflow straightener" has remedied intake turbulence in other platforms that my friends have built.

PURE135i · 01-30-2015, 10:58 AM

pure doesnt have an in house dyno....the inlet will be required for all stage 2 turbos so if you are planning on a stage 2 turbo make sure you get the inlet too

Quote:

Originally Posted by paradoxical3

Does Pure have any dynos or power estimates on this part? They have a dyno in shop and as a stage 1 customer I would love to see if this makes any additional power.

loesch · 01-30-2015, 11:18 AM

Quote:

Originally Posted by JETmn

So long as the MAF size isn't changing, that will be fine. The problem is making sure you don't have any turbulence at the MAF. I have run in to this with other platforms and that is why the transition in the stock intake is so gradual. If you get turbulence then your readings get thrown off.

Keep us posted Hutch! The pic really doesn't look like a big difference in actual inlet size, but the pipe itself looks less restrictive.

What do you mean by MAF size?

JETmn · 01-30-2015, 01:52 PM

Quote:

Originally Posted by loesch

What do you mean by MAF size?

The size of the mass airflow sensor itself. The intake prior to that will have no bearing on the readings as long as there is no turbulence. I have also worked on prior platforms that had the honeycomb air straighteners and people took them out to increase airflow and they became inconsistent.

PeteA · 01-30-2015, 03:45 PM

Does this pipe come in a black powder coat? I like keeping things looking stealth and OEM

iuhutch · 01-30-2015, 11:52 PM

Few updates on the inlets!

Buddy who first installed has had some DME kearning and it gets better by the run. Local tuner send him revision tonight. Before that car was on rails!

Data shows more power at lower psi is capable and easy on its friends.

Customer car now killing his last tune which was 17psicand now he's runner 14.

I'm also seeing the same after my inlet install

93oct, FBO pure stg1 and I let:

JETmn · 01-31-2015, 01:40 AM

Nice! Looking forward to seeing some data.

ShlemonboostedM · 01-31-2015, 01:08 PM

Quote:

Originally Posted by iuhutch

Few updates on the inlets!

Buddy who first installed has had some DME kearning and it gets better by the run. Local tuner send him revision tonight. Before that car was on rails!

Data shows more power at lower psi is capable and easy on its friends.

Customer car now killing his last tune which was 17psicand now he's runner 14.

I'm also seeing the same after my inlet install

93oct, FBO pure stg1 and I let:

So are you saying theirs noticeable difference?

iuhutch · 01-31-2015, 02:19 PM

Butt dyno suggest some gains, especially on spool up and overall throttle response.

We are conducting data deltas between the oem pipe and the inlet pipe but still have too many assumptions to share...that being said Data is showing some interesting results with duty cycle inefficiencies and basically feeling the same if not more power at lower boost levels.

Here is a quick clip playing around last night. map 2; 93OCT only.

PeterPure · 01-31-2015, 02:19 PM

Quote:

Originally Posted by iuhutch

Few updates on the inlets!

Buddy who first installed has had some DME kearning and it gets better by the run. Local tuner send him revision tonight. Before that car was on rails!

Data shows more power at lower psi is capable and easy on its friends.

Customer car now killing his last tune which was 17psicand now he's runner 14.

I'm also seeing the same after my inlet install

93oct, FBO pure stg1 and I let:

Are you saying the inlet is causing same power on less boost? Eg previously 17psi, now 14 psi required for same power?

That would be really nice!

iuhutch · 01-31-2015, 02:20 PM

Quote:

Originally Posted by Darkhold

Are you saying the inlet is causing same power on less boost? Eg previously 17psi, now 14 psi required for same power?

That would be really nice!

That is exactly what I am saying, my friend!

PeterPure · 01-31-2015, 02:21 PM

Quote:

Originally Posted by iuhutch

Quote:

Originally Posted by Darkhold

Are you saying the inlet is causing same power on less boost? Eg previously 17psi, now 14 psi required for same power?

That would be really nice!

That is exactly what I am saying, my friend!

Hmmm cant wait till they finish f series inlets

PeterPure · 01-31-2015, 02:25 PM

Btw any chance on diameter measurements. I would like to know how much bigger the pipe is at the turbo connecting side.

rhm135 · 01-31-2015, 02:34 PM

Quote:

Originally Posted by iuhutch

That is exactly what I am saying, my friend!

Can't wait to see some dyno results! Pure is doing some great things for us N55 guys!

tke344 · 01-31-2015, 03:13 PM

Interesting.. looking forward to more updates. Seems like similar results to the N54. More power, less WGDC.

iuhutch · 01-31-2015, 03:43 PM

Log from today. One pipe is left to install, so we'll try and get measurements of the inlet circumferences and share.

As you can see pwm is humming right along. DCT seems to be much happier compared to similar power levels I had last fall.

I really need to spend more time to get good information out all of this. Last guy to install his is working on specific attributes to compare and look for with TFT to see what they used in their inlets data results!

loesch · 01-31-2015, 04:01 PM

Thanks for the updates iuhutch. This winter is freaking killing me. I want to contribute to the testing but the car is hibernating and it's like 0 degrees outside.

iuhutch · 01-31-2015, 04:10 PM

Quote:

Originally Posted by loesch

Thanks for the updates iuhutch. This winter is freaking killing me. I want to contribute to the testing but the car is hibernating and it's like 0 degrees outside.

Yea your telling me! It's been surprisingly warm up here last few weeks so we are all trying to take advantage of that. Last two weekends have hit the 40s which is shocking for the northern tundra!

If someone is running a pure FBO n55 w oe inlet and has 93 oct only in, could you do 2-3 logs and send them to me?

Jdub679 · 01-31-2015, 04:13 PM

Someone may have asked this, but does the inlet pipe fit on stock turbo n55's or is it only for upgraded turbos?

iuhutch · 01-31-2015, 04:15 PM

Quote:

Originally Posted by Jdub679

Someone may have asked this, but does the inlet pipe fit on stock turbo n55's or is it only for upgraded turbos?

It fits stock too

01-30-2015, 03:45 PM	#51
PeteA Major 129 Rep 1,054 Posts Drives: E30, E82 Join Date: Sep 2012 Location: Melbourne iTrader: (3)	Does this pipe come in a black powder coat? I like keeping things looking stealth and OEM
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01-30-2015, 11:52 PM	#52
iuhutch Captain 118 Rep 656 Posts Drives: 18%E2%80%99 F80 ZCP Join Date: May 2013 Location: local iTrader: (0)	Few updates on the inlets! Buddy who first installed has had some DME kearning and it gets better by the run. Local tuner send him revision tonight. Before that car was on rails! Data shows more power at lower psi is capable and easy on its friends. Customer car now killing his last tune which was 17psicand now he's runner 14. I'm also seeing the same after my inlet install 93oct, FBO pure stg1 and I let:
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01-31-2015, 01:40 AM	#53
JETmn Lieutenant Colonel 247 Rep 1,595 Posts Drives: 2011 335i xDrive Msport Join Date: Apr 2013 Location: Orlando iTrader: (0) Garage List 2011 335Xi [0.00]	Nice! Looking forward to seeing some data.
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01-31-2015, 02:19 PM	#55
iuhutch Captain 118 Rep 656 Posts Drives: 18%E2%80%99 F80 ZCP Join Date: May 2013 Location: local iTrader: (0)	Butt dyno suggest some gains, especially on spool up and overall throttle response. We are conducting data deltas between the oem pipe and the inlet pipe but still have too many assumptions to share...that being said Data is showing some interesting results with duty cycle inefficiencies and basically feeling the same if not more power at lower boost levels. Here is a quick clip playing around last night. map 2; 93OCT only.
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01-31-2015, 02:25 PM	#59
PeterPure Major 677 Rep 1,349 Posts Drives: BMW F80 M3 Join Date: Jun 2008 Location: Belgium iTrader: (0) Garage List 2017 BMW F80 M3 [0.00]	Btw any chance on diameter measurements. I would like to know how much bigger the pipe is at the turbo connecting side.
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01-31-2015, 03:13 PM	#61
tke344 Lieutenant 39 Rep 463 Posts Drives: f15 X5 50i Join Date: Jan 2009 Location: Charlotte iTrader: (1)	Interesting.. looking forward to more updates. Seems like similar results to the N54. More power, less WGDC.
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01-31-2015, 03:43 PM	#62
iuhutch Captain 118 Rep 656 Posts Drives: 18%E2%80%99 F80 ZCP Join Date: May 2013 Location: local iTrader: (0)	Log from today. One pipe is left to install, so we'll try and get measurements of the inlet circumferences and share. As you can see pwm is humming right along. DCT seems to be much happier compared to similar power levels I had last fall. I really need to spend more time to get good information out all of this. Last guy to install his is working on specific attributes to compare and look for with TFT to see what they used in their inlets data results! Attached Images
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01-31-2015, 04:01 PM	#63
loesch Captain 133 Rep 917 Posts Drives: 2011 BMW 135i M Sport Join Date: Feb 2012 Location: State College, PA iTrader: (4)	Thanks for the updates iuhutch. This winter is freaking killing me. I want to contribute to the testing but the car is hibernating and it's like 0 degrees outside. __________________ 2011 135i M Sport 6MT LeMans Blue \| Active Autowerke Gen II axle back \| Berk d******* \| N54 gutted mids \| FuelIt Walbro 450 fuel pump \| Pure Turbos Stage 2 \| 3.5bar TMAP \| Pure Turbos inlet pipe \| BMS intake \| BMS oil catch can \| ETS intercooler \| ETS charge pipe \| BMS JB4 w/ ISO firmware \| BMS backend flash stacked on PPK \| Eibach springs \| Whiteline rear subframe bushing inserts \| cosmetic tidbits
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01-31-2015, 04:13 PM	#65
Jdub679 Captain 88 Rep 644 Posts Drives: 2011 BMW 335i coupe M Sport Join Date: Jan 2011 Location: Irvine, CA iTrader: (1)	Someone may have asked this, but does the inlet pipe fit on stock turbo n55's or is it only for upgraded turbos?
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