Anyone 400+ whp on n55

me06305 · 04-02-2021, 05:48 AM

How many HP that we can expect by running full E85?

Pussiwillow · 04-02-2021, 09:01 AM

Quote:

Originally Posted by me06305

How many HP that we can expect by running full E85?

Depends what supporting mods and what tuner.
There's an m235i pushing I think 480-490whp and 510wtq if I remember correctly full e85 and custom tune with all supporting mods...on stock turbo, you need to be more clear on what your goals are for more info

5w20 · 04-03-2021, 02:37 AM

Quote:

Originally Posted by Pussiwillow

Depends what supporting mods and what tuner.
There's an m235i pushing I think 480-490whp and 510wtq if I remember correctly full e85 and custom tune with all supporting mods...on stock turbo, you need to be more clear on what your goals are for more info

Link to info? Any info as far parts list, log info, or dyno sheet?

Pussiwillow · 04-03-2021, 08:50 AM

Quote:

Originally Posted by 5w20

Quote:

Originally Posted by Pussiwillow

Depends what supporting mods and what tuner.
There's an m235i pushing I think 480-490whp and 510wtq if I remember correctly full e85 and custom tune with all supporting mods...on stock turbo, you need to be more clear on what your goals are for more info

Link to info? Any info as far parts list, log info, or dyno sheet?

Here you go

Logicoeur · 04-03-2021, 10:52 PM

It wish it showed the rpm range for the log.

Pussiwillow · 04-04-2021, 09:39 AM

Quote:

Originally Posted by Logicoeur

It wish it showed the rpm range for the log.

I know what you mean, I wish I had more details on it

5w20 · 04-04-2021, 03:11 PM

Quote:

Originally Posted by Pussiwillow

Quote:

Originally Posted by 5w20

Quote:

Originally Posted by Pussiwillow

Depends what supporting mods and what tuner.
There's an m235i pushing I think 480-490whp and 510wtq if I remember correctly full e85 and custom tune with all supporting mods...on stock turbo, you need to be more clear on what your goals are for more info

Link to info? Any info as far parts list, log info, or dyno sheet?

Here you go

That powerband doesn't look anything like a stock turbo.

Pussiwillow · 04-04-2021, 05:11 PM

Quote:

Originally Posted by 5w20

Quote:

Originally Posted by Pussiwillow

Quote:

Originally Posted by 5w20

Quote:

Originally Posted by Pussiwillow

Depends what supporting mods and what tuner.
There's an m235i pushing I think 480-490whp and 510wtq if I remember correctly full e85 and custom tune with all supporting mods...on stock turbo, you need to be more clear on what your goals are for more info

Link to info? Any info as far parts list, log info, or dyno sheet?

Here you go

That powerband doesn't look anything like a stock turbo.

I don't know anything related to the car other than these screen shots, they claim stock turbo, I don't know if they're a member on the 2 series group or what; but I would also like to see logs on this

AmuroRay · 04-04-2021, 08:52 PM

Hp and torque cross over at 5252. The fact that this car is hitting peak HP near 6500 instead of 5500rpm are a give away that this isn’t a stock turbo.

I literally do not believe it.

Logicoeur · 04-04-2021, 09:10 PM

Quote:

Originally Posted by AmuroRay

Hp and torque cross over at 5252. The fact that this car is hitting peak HP near 6500 instead of 5500rpm are a give away that this isn’t a stock turbo.

I literally do not believe it.

How can you tell what rpm the crossover is at? I see the X axis but no indication as to the range or scale

AmuroRay · 04-04-2021, 09:30 PM

Quote:

Originally Posted by Logicoeur

How can you tell what rpm the crossover is at? I see the X axis but no indication as to the range or scale

Since both HP and TQ are on the same scale on the Y axis, hp and torque MUST crossover at 5252RPM. That means each increment on the X axis is likely 500rpm. If you look at the graph again and assume 5000rpm is right before hp/tq crossover, then the next increment is 5500, then 6000 and then the graph cuts off.

Edit: if those units at the bottom were 100RPM increments, it would show over 7000RPM.

5w20 · 04-05-2021, 09:09 AM

Quote:

Originally Posted by AmuroRay

Quote:

Originally Posted by Logicoeur

How can you tell what rpm the crossover is at? I see the X axis but no indication as to the range or scale

Since both HP and TQ are on the same scale on the Y axis, hp and torque MUST crossover at 5252RPM. That means each increment on the X axis is likely 500rpm. If you look at the graph again and assume 5000rpm is right before hp/tq crossover, then the next increment is 5500, then 6000 and then the graph cuts off.

Edit: if those units at the bottom were 100RPM increments, it would show over 7000RPM.

There are times when they scale the graphs differently that causes them not to cross at 5252RPM, but you're correct, they do usually cross at that RPM.

Quote:

Originally Posted by Pussiwillow

Quote:

Originally Posted by 5w20

Quote:

Originally Posted by Pussiwillow

Quote:

Originally Posted by 5w20

Quote:

Originally Posted by Pussiwillow

Depends what supporting mods and what tuner.
There's an m235i pushing I think 480-490whp and 510wtq if I remember correctly full e85 and custom tune with all supporting mods...on stock turbo, you need to be more clear on what your goals are for more info

Link to info? Any info as far parts list, log info, or dyno sheet?

Here you go

That powerband doesn't look anything like a stock turbo.

I don't know anything related to the car other than these screen shots, they claim stock turbo, I don't know if they're a member on the 2 series group or what; but I would also like to see logs on this

I can't say for certain that it's not possible, but I highly doubt it. FWIW, there's been a few people lately claiming "stock turbo" 1/4 mile records on Instagram, when they really aren't stock. Anyone who's followed stock turbo N55's closely knows that when pushed towards its limit, the stock n55 turbo starts running out of steam in the lower 5k RPMs. Yet when they post these record videos you can see them shifting at 6.5-7k RPM

Logicoeur · 04-05-2021, 09:16 AM

AmuroRay 5w20 wow. Is that inflection point just something inherent to the design of the engine? 6cyl, valve config, vanos? I'm interested to know what's significant about 5252 and how that works.

5w20 · 04-05-2021, 09:17 AM

Quote:

Originally Posted by Logicoeur

AmuroRay 5w20 wow. Is that inflection point just something inherent to the design of the engine? 6cyl, valve config, vanos? I'm interested to know what's significant about 5252 and how that works.

https://www.motorauthority.com/news/...ss-at-5252-rpm

See above for 5252RPM Hp/Tq crossover point.

The reason the stock n55 setup nose dives so early is simply because the turbo is way beyond its efficiency point.

AmuroRay · 04-05-2021, 10:17 AM

Honestly, I hate social media, but I hate Instagram the most.

Literally almost all the content is trash, hidden behind videos with no tracker, vague if not downright deceptive descriptions, and often times hidden behind private profiles.
It's garbage.

thejeremyman9 · 04-05-2021, 11:40 AM

Quote:

Originally Posted by Logicoeur

AmuroRay 5w20 wow. Is that inflection point just something inherent to the design of the engine? 6cyl, valve config, vanos? I'm interested to know what's significant about 5252 and how that works.

Its just a conversion factor lol, nothing to do with our specific engine or anything. Its like 2.54 cm per inch.

ZM2 · 04-05-2021, 12:07 PM

Until it’s done on a Dynojet with a stock map run on the same day and a properly labeled dyno graph, it didn’t happen.

https://f87.bimmerpost.com/forums/sh....php?t=1774687

https://f87.bimmerpost.com/forums/sh....php?t=1782079

n55.Gabe · 12-13-2023, 08:03 AM

Hey everyone, just bought a bmw 2015 535i.
Just installed new NGK iridium spark plugs.
car feels kind of sluggish and throttle response is ok
anyone know how to fix that?
also i want to make it sound nice and make it fast
anyone have any good recommendations on what bolt-ons I should start looking at and any tunes like maybe MHD or Jb4?
thank you!

thejeremyman9 · 12-13-2023, 01:45 PM

Quote:

Originally Posted by n55.Gabe

Hey everyone, just bought a bmw 2015 535i.
Just installed new NGK iridium spark plugs.
car feels kind of sluggish and throttle response is ok
anyone know how to fix that?
also i want to make it sound nice and make it fast
anyone have any good recommendations on what bolt-ons I should start looking at and any tunes like maybe MHD or Jb4?
thank you!

Welcome. The thread you posted in is old. Last post was 2021. Do a search for mod recommendations on here or on google and you will get tons of results. You also didnt need those spark plugs, so i would do some spark plug research while you are at it

AmuroRay · 12-13-2023, 05:59 PM

Probably me. We'll see.

04-02-2021, 05:48 AM	#45
me06305 bt5000 4 Rep 45 Posts Drives: BMW AH3 F30 2014 Join Date: Dec 2020 Location: Thailand iTrader: (0)	How many HP that we can expect by running full E85?
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04-03-2021, 10:52 PM	#49
Logicoeur Lieutenant Colonel 990 Rep 1,934 Posts Drives: F30 335i xDrive Join Date: Feb 2018 Location: Boston iTrader: (0)	It wish it showed the rpm range for the log. __________________ F30 335iX \| Remus Axleback \| Fabspeed Catted DP \| VRSF Comp IC \| 18X9 ET35 19lb MT1 \| 255/40/18 ECS \| Ohlins RT Millway Street \| Millway Control Arm Bushings \| Turner Endlinks \| TMH 75mm 14x1.5 Studs \| BMW MPerf LSD \| XDelete \| Pipercross Filter \| MHD Stg2 93
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04-04-2021, 08:52 PM	#53
AmuroRay Brigadier General 2268 Rep 4,132 Posts Drives: M235i Join Date: Aug 2019 Location: Florida iTrader: (0)	Hp and torque cross over at 5252. The fact that this car is hitting peak HP near 6500 instead of 5500rpm are a give away that this isn’t a stock turbo. I literally do not believe it.
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04-05-2021, 09:16 AM	#57
Logicoeur Lieutenant Colonel 990 Rep 1,934 Posts Drives: F30 335i xDrive Join Date: Feb 2018 Location: Boston iTrader: (0)	AmuroRay 5w20 wow. Is that inflection point just something inherent to the design of the engine? 6cyl, valve config, vanos? I'm interested to know what's significant about 5252 and how that works. __________________ F30 335iX \| Remus Axleback \| Fabspeed Catted DP \| VRSF Comp IC \| 18X9 ET35 19lb MT1 \| 255/40/18 ECS \| Ohlins RT Millway Street \| Millway Control Arm Bushings \| Turner Endlinks \| TMH 75mm 14x1.5 Studs \| BMW MPerf LSD \| XDelete \| Pipercross Filter \| MHD Stg2 93
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04-05-2021, 10:17 AM	#59
AmuroRay Brigadier General 2268 Rep 4,132 Posts Drives: M235i Join Date: Aug 2019 Location: Florida iTrader: (0)	Honestly, I hate social media, but I hate Instagram the most. Literally almost all the content is trash, hidden behind videos with no tracker, vague if not downright deceptive descriptions, and often times hidden behind private profiles. It's garbage. __________________ Mods: Yes.
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04-05-2021, 12:07 PM	#61
ZM2 Brigadier General 2811 Rep 3,695 Posts Drives: 2017 LBB M2 Join Date: Mar 2017 Location: Baltimore iTrader: (1)	Until it’s done on a Dynojet with a stock map run on the same day and a properly labeled dyno graph, it didn’t happen. https://f87.bimmerpost.com/forums/sh....php?t=1774687 https://f87.bimmerpost.com/forums/sh....php?t=1782079 Last edited by ZM2; 04-05-2021 at 12:29 PM..
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12-13-2023, 08:03 AM	#62
n55.Gabe Registered 0 Rep 1 Posts Drives: 2015 BMW 535I Join Date: Dec 2023 Location: Massachusetts iTrader: (0)	n55 more power Hey everyone, just bought a bmw 2015 535i. Just installed new NGK iridium spark plugs. car feels kind of sluggish and throttle response is ok anyone know how to fix that? also i want to make it sound nice and make it fast anyone have any good recommendations on what bolt-ons I should start looking at and any tunes like maybe MHD or Jb4? thank you!
	Appreciate 0 Quote

12-13-2023, 05:59 PM	#64
AmuroRay Brigadier General 2268 Rep 4,132 Posts Drives: M235i Join Date: Aug 2019 Location: Florida iTrader: (0)	Probably me. We'll see. __________________ Mods: Yes.
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