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Bee Pee Bee Pee is offline
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Default 10-03-2016, 08:55 AM

Quote:
Originally Posted by crobond
I have install the inlet now on a stock n55 EWG turbo. I have here two logs. The first at 23.01 is with stock inlet and the second 5.40 is with pure inlet. For me looks same, but the car feels better when i accelerate.

2nd log avg ign is much higher than 1st log and PWM is lower in 2nd log compared with 1st log, maybe due to DME still adapting post inlet install ?

I would of thought you'd see more, if map 6 BT was tweaked, assuming AI trends back downwards.....


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Bee Pee Bee Pee is offline
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Default 10-03-2016, 08:56 AM

Quote:
Originally Posted by Weehe
A bit of results on the stock turbo. I just swapped out the inlet last night and didn't change anything tuning wise. In comparing a few old and new logs, looks like I have gained 0.2psi above 4500rpms.
Which map did you use for before and after logs ?


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Weehe Weehe is offline
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Default 10-03-2016, 09:21 AM

Quote:
Originally Posted by Bee Pee
Which map did you use for before and after logs ?
Maxed out custom map 6.
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LycanX4M40i LycanX4M40i is offline
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Default 10-03-2016, 11:00 AM

No dynos?
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(#55)
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Bee Pee Bee Pee is offline
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Default 11-02-2016, 03:25 PM

Plot below is prior mods v latest intake mods

Prior mods green lines from same dyno in 2015:-

Map 6 Jb4 ewg board + harness and FF wires
BCS sport *** DP
MPE
Oem air box with Afe dry drop in and afe airscoop
Shell v power

Latest mods red lines recently:-

As above but with intake mods as follows

Map 6 - minor fettling co BW Chiptune.
Dinan CAI with afe air scoop
Wagner evo 2 comp FMIC
ER boost ***** both sides of FMIC
Pure hi flo inlet pipe
Shell v power



Peak gains may look marginal but "area under the curve" is much improved.

Deltas more evident from mid range upwards and Jason @ BW Chiptune drove the car after he'd fetted it and was v complimentary about how smooth the car felt. This is evident as red line is smoother than green line across the full rev range.

I've yet to drive the car properly so too early to comment but what I've noticed initially is that Dinan CAI has more "voice" in a good way with Pure hi flo inlet pipe.....

Hats off to the guys at BW - great service and advice as usual.

BP


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(#56)
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Peter @ Pure's Avatar
Peter @ Pure Peter @ Pure is offline
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Default 11-02-2016, 11:09 PM

Nice info BP!


F21 M140i - 100-200: 5.18 60-130: 5.96
Audi TTRS - 100-200: 4.01 60-130: 4.5
F80 M3 - 100-200: 4.32, 60-130: 4.8
F20 M135i (sold) - 100-200: 6.26 , 60-130: 7.4
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Bee Pee Bee Pee is offline
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Default 11-03-2016, 01:22 AM

Quote:
Originally Posted by Peter @ Pure/PTF
Nice info BP!
Thanks - once I find more time I will return to BW's dyno with Tesco Momentum 99 fuel in the tank to re-run/re-fettle map 6 to suit.

Looking at the gains from mid range upwards on pump fuel, I'm expecting more fireworks with octane boosted on map 5 or map 7


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Default 11-10-2016, 07:50 PM

Is the stock inlet pipe bolted to the turbo? I removed the bolt attached to the head, but it won't budge. My turbo core has a stud next to the inlet, but the pure inlet doesn't have anything that goes over it, so I'm not sure if thats for the inlet or something else. I can't see it well enough in the car to be able to tell.


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Default 11-10-2016, 10:27 PM

Quote:
Originally Posted by Mike_L
Is the stock inlet pipe bolted to the turbo? I removed the bolt attached to the head, but it won't budge. My turbo core has a stud next to the inlet, but the pure inlet doesn't have anything that goes over it, so I'm not sure if thats for the inlet or something else. I can't see it well enough in the car to be able to tell.
no its just a tight fit after you tahe the bolt out rotate away from the motor then back loosen it up and wiggle out


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Default 11-11-2016, 12:55 AM

Thanks, I'll give it a shot. Wanna get that on before winter gets here.


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(#61)
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Bee Pee Bee Pee is offline
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Default 11-11-2016, 01:54 AM

Update

Avg ign on SUL was mid to high 2s before and now it's consistently less than 1 with same SUL.



PWM is <40 so these 2 positive changes must be due to combo of new intake plumbing and BW's map6 voodoo magic. Car was no slouch before, now it's stronger and intake sounds add more drama to the full bore experience !!

Happy chappy


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rwalker rwalker is offline
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Default 11-11-2016, 12:09 PM

Quote:
Originally Posted by Newguy123
no its just a tight fit after you tahe the bolt out rotate away from the motor then back loosen it up and wiggle out
there's a nut holding the stock inlet to the turbo, yes...


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rwalker rwalker is offline
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Default 11-11-2016, 12:10 PM

Quote:
Originally Posted by Mike_L
Is the stock inlet pipe bolted to the turbo? I removed the bolt attached to the head, but it won't budge. My turbo core has a stud next to the inlet, but the pure inlet doesn't have anything that goes over it, so I'm not sure if thats for the inlet or something else. I can't see it well enough in the car to be able to tell.
yes, there's a nut... number 5 in this diagram:

http://www.realoem.com/bmw/enUS/show...diagId=13_1500


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LycanX4M40i LycanX4M40i is offline
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Default 02-11-2017, 10:47 PM

Bee Pee very true your Area Under Curve dyno does show good gains the whole range
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katsooba katsooba is offline
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Default 02-12-2017, 05:52 AM

E82 n55 here, although i have the bolt on the turbo, my inlet is not bolted to it
In fact the inlet is perfectly round, meaning - even if i tried to bolt it to the turbo, i couldnt do it.
The bolt is just there for no reason, and my inlet is not vroken or anything i have checked for that


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SeanWRT SeanWRT is offline
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Default 02-13-2017, 04:58 AM

Question: will this inlet make air mixture slightly leaner, as turbo is supposed to flow better with it at any given boost? Or will pre *** o2 senser measure and adjust AFR so fuel trim is maintained?

I am going to use Pure inlet pipe on Dinan tune, which has a richer AFR target. I don't mind it's made a little bit leaner.

Last edited by SeanWRT; 02-13-2017 at 05:20 AM..
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Weehe Weehe is offline
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Default 02-13-2017, 06:47 AM

No it will not make it leaner, this is post MAF.
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SeanWRT SeanWRT is offline
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Default 02-13-2017, 08:35 AM

Quote:
Originally Posted by Weehe
No it will not make it leaner, this is post MAF.
I can be wrong but isn't our DME MAP based?
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Weehe Weehe is offline
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Default 02-13-2017, 08:47 AM

Quote:
Originally Posted by SeanWRT
I can be wrong but isn't our DME MAP based?
It is not, N54 is.
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SeanWRT SeanWRT is offline
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Default 02-13-2017, 09:13 PM

Quote:
Originally Posted by Weehe
It is not, N54 is.
Seriously doubt it. How can so many N55 be running mafless out there?
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Default 02-13-2017, 09:21 PM

Quote:
Originally Posted by SeanWRT
Seriously doubt it. How can so many N55 be running mafless out there?
The maf is used for idling and I believe in wot applications it switches to map only. The car in theory isn't supposed to run maf-less, if you unplug the maf you essentially force the car to run on the map sensor alone. The jb4 is there (to the best of my knowledge) just to clear the codes via canbus. I've heard of others running maf-less via flash only and just ignoring the check engine light and it seemed to solve the rough idle issues just as well as "jb4 maf-less".


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SeanWRT SeanWRT is offline
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Default 02-14-2017, 12:11 AM

Quote:
Originally Posted by Lowon
The maf is used for idling and I believe in wot applications it switches to map only. The car in theory isn't supposed to run maf-less, if you unplug the maf you essentially force the car to run on the map sensor alone. The jb4 is there (to the best of my knowledge) just to clear the codes via canbus. I've heard of others running maf-less via flash only and just ignoring the check engine light and it seemed to solve the rough idle issues just as well as "jb4 maf-less".
Either WOT or idle, it's MAP based.

In partial throttle, pre C A T o2 sensor is helping maintain fuel trim, which is what we call closed loop. In WOT, AFR is open looped and is not affected by exhaust feedback.

I don't have a tuning background to begin with though that's how our platform behave to my understanding. Appreciate someone in the know please give in depth answer.
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Default 02-14-2017, 01:27 AM

Quote:
Originally Posted by SeanWRT
Either WOT or idle, it's MAP based.

In partial throttle, pre C A T o2 sensor is helping maintain fuel trim, which is what we call closed loop. In WOT, AFR is open looped and is not affected by exhaust feedback.

I don't have a tuning background to begin with though that's how our platform behave to my understanding. Appreciate someone in the know please give in depth answer.
I'm not quite sure either man, all my cars that I actually understood tuning on didn't have a maf sensor so I'm not sure what to say. All I have heard is the maf sensor is used to help improve fuel economy and emissions which is why it's implemented on the n55, as newer times = stricter emissions regulations etc.

Personally I don't really like running maf-less. But the end choice is yours.


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JETmn JETmn is offline
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Default 02-14-2017, 08:12 AM

Quote:
Originally Posted by SeanWRT
Seriously doubt it. How can so many N55 be running mafless out there?
You need to clarify which N55. The F series is MAP based and the E series is not. There aren't hardly any E series running MAF less. I did hear of a couple trying it, but I don't know if they stayed with it or not. I don't think they did. The MAF is more accurate than MAP, so that is why it is used to help with emissions.
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SeanWRT SeanWRT is offline
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Default 02-14-2017, 09:08 AM

Quote:
Originally Posted by JETmn
You need to clarify which N55. The F series is MAP based and the E series is not. There aren't hardly any E series running MAF less. I did hear of a couple trying it, but I don't know if they stayed with it or not. I don't think they did. The MAF is more accurate than MAP, so that is why it is used to help with emissions.
F series EWG.

My question has been really if inlet pipe makes DME run leaner if turbo does flow more with it at given boost.
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