BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Dyno Runs Stock/Mods List Them!

Post Reply
 
Thread Tools Search this Thread
      12-20-2017, 02:00 PM   #133
FSociety
IG @bmwF9xG80
FSociety's Avatar
3810
Rep
7,594
Posts

Drives: G80 M3, X4M, G07 X7m50
Join Date: Apr 2012
Location: NYC to NJ to Orlando FL

iTrader: (3)

Garage List
2023 BMW G80 M3  [0.00]
2020 BMW X4MC  [0.00]
16' BMW X4 M40i  [10.00]
06 Cadillac STS  [0.00]
Thanks to those posting full graph of the Dyno to show the power curve \ power band as peak numbers means nothing if its only a slight peak

New Thread coming soon
Dragy times 0-60, 1/4 mile, 1/2 mile, 60-130mph
__________________
60-130mph 6.5s X4M #HCP
60-130mph 5.0s G80 M3 #OrlandoAutowerks Sauce

IG: @bmwF9XG80

Appreciate 1
BAN_M2C4154.50
      12-20-2017, 02:21 PM   #134
///cbrash
Second Lieutenant
227
Rep
209
Posts

Drives: f80 M3
Join Date: Aug 2017
Location: Edmond, OK

iTrader: (0)

Quote:
Originally Posted by Orange fever View Post
Now you just need to add downpipe and stg 2.
Your going to be joining the 400 Club ///
I cant wait! Im putting on a nice intercooler now and in a few months i'll pony up for the downpipe and stage two!
Appreciate 1
      12-20-2017, 02:39 PM   #135
///cbrash
Second Lieutenant
227
Rep
209
Posts

Drives: f80 M3
Join Date: Aug 2017
Location: Edmond, OK

iTrader: (0)

Quote:
Originally Posted by brooke1972 View Post
I went ahead and ordered the Stage 2 since I already have a wagner competition intercooler and a er dp...
That is awesome, Gary and the guys there are great. I would love to see a dyno!
Appreciate 0
      12-20-2017, 04:35 PM   #136
Orange fever
Colonel
Orange fever's Avatar
Thailand
2349
Rep
2,828
Posts

Drives: E36M,E46M,E90M,X5M,i3,M2,i8
Join Date: Dec 2007
Location: SoCal. in the hood!!!

iTrader: (5)

Yes .... still debating in getting an intercooler we'll see what happens in the future
Quote:
Originally Posted by ///cbrash View Post
I cant wait! Im putting on a nice intercooler now and in a few months i'll pony up for the downpipe and stage two!
Get a dyno before installing the stage 2 like to see what you started with, with those mods
Quote:
Originally Posted by brooke1972 View Post
I went ahead and ordered the Stage 2 since I already have a wagner competition intercooler and a er dp...
__________________

BMW I12 i8 Frozen Yellow- H&R springs, 22" Radenergie F10 Monoblock Forged ///
F87 M2 Aw -Vorsteiner Aero Kit, VFF-107,Macht Schnell-Springs,VF-Engineering/Hex tuning Stage Two,ER DP,Stock Exhaust,Drop-In Bmc Filter,AA Intercooler,FTP Charge pipe+boost pipe/// Wish list :Mexico delivery 2024 BMW M2 (G87)
Appreciate 0
      12-21-2017, 02:57 PM   #137
Simuk
New Member
0
Rep
5
Posts

Drives: BMW M2
Join Date: Dec 2017
Location: England

iTrader: (0)

Dyno Querry

Hello All

New to the forums, New to the M2 have had it for around 2 months now.
I have had the car on a dyno run with an odd anomaly.
At around 5700RPM I get a sudden dip which you can view in the jpg attached to this post.
It happened on all 3 runs.

Now is this normal ? has anyone else come across it ?

Thanks
Attached Images
 
Appreciate 0
      12-21-2017, 03:34 PM   #138
FSociety
IG @bmwF9xG80
FSociety's Avatar
3810
Rep
7,594
Posts

Drives: G80 M3, X4M, G07 X7m50
Join Date: Apr 2012
Location: NYC to NJ to Orlando FL

iTrader: (3)

Garage List
2023 BMW G80 M3  [0.00]
2020 BMW X4MC  [0.00]
16' BMW X4 M40i  [10.00]
06 Cadillac STS  [0.00]
Quote:
Originally Posted by Simuk View Post
Hello All

New to the forums, New to the M2 have had it for around 2 months now.
I have had the car on a dyno run with an odd anomaly.
At around 5700RPM I get a sudden dip which you can view in the jpg attached to this post.
It happened on all 3 runs.

Now is this normal ? has anyone else come across it ?

Thanks
is this stock runs?
what fuel ?
__________________
60-130mph 6.5s X4M #HCP
60-130mph 5.0s G80 M3 #OrlandoAutowerks Sauce

IG: @bmwF9XG80

Appreciate 0
      12-21-2017, 03:43 PM   #139
Simuk
New Member
0
Rep
5
Posts

Drives: BMW M2
Join Date: Dec 2017
Location: England

iTrader: (0)

Hello

yeah this stock car.

And the fuel was BP ultimate (97RON)
Appreciate 0
      12-21-2017, 05:05 PM   #140
Orange fever
Colonel
Orange fever's Avatar
Thailand
2349
Rep
2,828
Posts

Drives: E36M,E46M,E90M,X5M,i3,M2,i8
Join Date: Dec 2007
Location: SoCal. in the hood!!!

iTrader: (5)

The drop is normal 6.5-7
///
Have you done the break in service yet ?
Maybe that's why it's dropping at 5700. Not sure don't quote me on that
Quote:
Originally Posted by Simuk View Post
Hello All

New to the forums, New to the M2 have had it for around 2 months now.
I have had the car on a dyno run with an odd anomaly.
At around 5700RPM I get a sudden dip which you can view in the jpg attached to this post.
It happened on all 3 runs.

Now is this normal ? has anyone else come across it ?

Thanks
__________________

BMW I12 i8 Frozen Yellow- H&R springs, 22" Radenergie F10 Monoblock Forged ///
F87 M2 Aw -Vorsteiner Aero Kit, VFF-107,Macht Schnell-Springs,VF-Engineering/Hex tuning Stage Two,ER DP,Stock Exhaust,Drop-In Bmc Filter,AA Intercooler,FTP Charge pipe+boost pipe/// Wish list :Mexico delivery 2024 BMW M2 (G87)

Last edited by Orange fever; 12-21-2017 at 05:11 PM..
Appreciate 0
      12-21-2017, 05:11 PM   #141
Simuk
New Member
0
Rep
5
Posts

Drives: BMW M2
Join Date: Dec 2017
Location: England

iTrader: (0)

Quote:
Originally Posted by Orange fever View Post
The drop is normal 6.5-7
///
Hey thanks

Yeah 6.5-7 agreed normal.
Looking at the dip at around 5.7.
yeah service is done, I hit the 1500 miles early so I could actually play with the car

Thanks
Appreciate 0
      12-21-2017, 06:10 PM   #142
FSociety
IG @bmwF9xG80
FSociety's Avatar
3810
Rep
7,594
Posts

Drives: G80 M3, X4M, G07 X7m50
Join Date: Apr 2012
Location: NYC to NJ to Orlando FL

iTrader: (3)

Garage List
2023 BMW G80 M3  [0.00]
2020 BMW X4MC  [0.00]
16' BMW X4 M40i  [10.00]
06 Cadillac STS  [0.00]
Could also be Dyno Operator
Did you turn off Traction Control off completely?
What gear?
__________________
60-130mph 6.5s X4M #HCP
60-130mph 5.0s G80 M3 #OrlandoAutowerks Sauce

IG: @bmwF9XG80

Appreciate 0
      12-21-2017, 06:46 PM   #143
horsepower_and_hounds
Brigadier General
1836
Rep
4,204
Posts

Drives: BMW
Join Date: Aug 2012
Location: USA

iTrader: (9)

That dip seems to be common...I have seen it on other stock M2 dyno sheets. Alex Choi had it on his prior to Nik @ VF Engineering tuning his car.
Appreciate 0
      12-21-2017, 11:56 PM   #144
///cbrash
Second Lieutenant
227
Rep
209
Posts

Drives: f80 M3
Join Date: Aug 2017
Location: Edmond, OK

iTrader: (0)

Quote:
Originally Posted by m2ruder View Post
That dip seems to be common...I have seen it on other stock M2 dyno sheets. Alex Choi had it on his prior to Nik @ VF Engineering tuning his car.
yep, i saw that video too. Only weird thing is that it shuts off at 6.5, thats interesting.
Appreciate 0
      12-22-2017, 04:20 AM   #145
Bee Pee
Brigadier General
United Kingdom
1738
Rep
4,496
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Quote:
Originally Posted by Simuk View Post
Hello

yeah this stock car.

And the fuel was BP ultimate (97RON)
Sim

M2 need min 98 RON so suggest switching away from BPU and using Shell V power or Tesco Momentum 99 - both 99 RON.

BP
Appreciate 0
      12-22-2017, 12:22 PM   #146
VCP
Colonel
VCP's Avatar
Canada
1390
Rep
2,336
Posts

Drives: M4GTS BSM/F90comp/BSM M2CS
Join Date: Mar 2011
Location: Canada

iTrader: (0)

Hi all, here is the stock baseline Dyno on my wifes 2018 M2. 8 runs, all quite consistent. This was run 6. The adaptation factor found its limit on this run
Has full Active Autowerke race exhaust(sounds freaking unreal!!) on now and doing another set of runs this weekend. Break in service next week and then the DME is coming out!
Attached Images
 
Appreciate 2
      12-22-2017, 11:51 PM   #147
gingerbread
Enlisted Member
51
Rep
48
Posts

Drives: BMW
Join Date: May 2016
Location: Canada

iTrader: (0)

Something is not right with the dyno readout .....

Torque and Horsepower should always cross at 5,252 RPM. Much like user VCP Dyno he posted here

Torque = (Horsepower x 5,252) / RPM

Horsepower = (Torque x RPM) / 5,252

It is a mathematical constant derived from the fact that a 1 foot circle has a circumference of 6.2832 feet. Dividing 33,000(1 horsepower = 33,000 lb-ft/min) by 6.2832 gives you 5,252, which simplifies the equation and resolves the units. This constant is the reason that horsepower and torque graphs always cross paths at 5,252 rpm.


For the Info box in the lower right corner, just to break it down a bit

BP: Barometric Pressure (982.2)
RH: Relative Humidity (60%)
AT: Ambient Temp (13°C)
IT: Intake Temp (14°C)
RR: Ramp Rate (150) So a ramp rate of 150 on a dyno dynamics dyno allows the wheels to accelerate at 15kph per second in a linear rate from start to finish. This can be manually changed when the dyno dynamics in not in shootout mode. This run was in shootout and I think its preset in this mode.

TN: Total Inertia. It's a calibration figure based on the dyno and shootout mode the run was done in. So should be constant for same dyno + same shootout mode. Certainly has a reading on your power figure. Total Inertia is based on the model of dyno (and it's factory calibration), + the guesstimated inertia produced by vehicles fitting the chosen mode.

I say get the RPM being off fixed first before getting hung up on the dyno graph. That being said I have seen something kinda like this with to long of a dyno run (low ramp rate) with limited air flow on the intercooler, the DME pulling power because of air temps being high. Good Luck

(next line) date time

CK: Check number. Simply a way for DynoDynamics to check to see if any of teh numbers on a chart have been fudged with (eg. a photochop). Not anything to do with calibrations, so they'll always be different.

CF: Mode the dyno is run in (SHOOT = shootout, # = cylinders and F = Forced Induction), picking the wrong one here is an easy way to generate inflated figures

TyrePres: Tyre Pressure (PSI)

Gear: self explanatory. Hand entered by the operator, but has no bearing on the result itself, the run should be done with a 1:1 ratio gear selected

I say get the RPM issue fixed first before getting hung up on it. With saying that i've seen something like this before with to long of a dyno runs (low ramp rate) and limited air flow across the intercooler, causing the DME to pull power from overly high intake air temps.


Quote:
Originally Posted by Simuk View Post
Hello All

New to the forums, New to the M2 have had it for around 2 months now.
I have had the car on a dyno run with an odd anomaly.
At around 5700RPM I get a sudden dip which you can view in the jpg attached to this post.
It happened on all 3 runs.

Now is this normal ? has anyone else come across it ?

Thanks
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 10:37 AM.




m2
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST