BMW Garage BMW Meets Register Today's Posts
M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Baseline Dyno at Cobb

Post Reply
 
Thread Tools Search this Thread
      02-11-2017, 05:56 PM   #1
MRufo
Private First Class
United_States
36
Rep
123
Posts

Drives: M2
Join Date: Oct 2016
Location: Gaia

iTrader: (0)

Baseline Dyno at Cobb

92 octane
DCT
3 pulls avg was 310/345
The numbers were much lower than I thought they were going to be since the car feels pretty quick. On the same dyno my stock 2011 Evo X did 295/305.
I'll upload the graph when I get a chance.
Appreciate 0
      02-11-2017, 06:07 PM   #2
kiysersosae
Lieutenant
kiysersosae's Avatar
United Kingdom
433
Rep
571
Posts

Drives: 1M, M2CS, M3CS
Join Date: Jul 2013
Location: United Kingdom

iTrader: (0)

Quote:
Originally Posted by MRufo View Post
92 octane
DCT
3 pulls avg was 310/345
The numbers were much lower than I thought they were going to be since the car feels pretty quick. On the same dyno my stock 2011 Evo X did 295/305.
I'll upload the graph when I get a chance.
What gear was this in? 5th gear for dct. People say around 15bhp less in 4TH FOR DCT due to this not being 1:1 ratio
Appreciate 0
      02-11-2017, 06:26 PM   #3
MRufo
Private First Class
United_States
36
Rep
123
Posts

Drives: M2
Join Date: Oct 2016
Location: Gaia

iTrader: (0)

It actually sounded like he was doing the pulls in 3rd. He told me they don't see many M cars on their dyno and that he didn't know much about the car. Maybe that's why the number is so low?
Appreciate 0
      02-11-2017, 07:10 PM   #4
kiysersosae
Lieutenant
kiysersosae's Avatar
United Kingdom
433
Rep
571
Posts

Drives: 1M, M2CS, M3CS
Join Date: Jul 2013
Location: United Kingdom

iTrader: (0)

Quote:
Originally Posted by MRufo View Post
It actually sounded like he was doing the pulls in 3rd. He told me they don't see many M cars on their dyno and that he didn't know much about the car. Maybe that's why the number is so low?

5th gear is 1:1 so I would ignore those figures and go back, graphs will be no use.
Appreciate 0
      02-11-2017, 07:11 PM   #5
zenmaster
Brigadier General
United_States
1577
Rep
3,888
Posts

Drives: '17 M2
Join Date: Mar 2007
Location: Atlanta

iTrader: (1)

Lol!
Appreciate 0
      02-11-2017, 10:36 PM   #6
rich8102
Private First Class
United_States
37
Rep
123
Posts

Drives: 2017 LBB M2
Join Date: Jan 2014
Location: North Port FL

iTrader: (1)

What gear for a manual transmission??
Appreciate 0
      02-11-2017, 11:02 PM   #7
chmura
Colonel
chmura's Avatar
1558
Rep
2,505
Posts

Drives: 2019 M2 Competition
Join Date: Aug 2009
Location: Orange County, California

iTrader: (1)

5th for both DCT and Manuall
Appreciate 2
FSociety3811.50
      02-11-2017, 11:54 PM   #8
FSociety
IG @bmwF9xG80
FSociety's Avatar
3812
Rep
7,593
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 chmura View Post
5th for both DCT and Manuall
+1 DCT & Manual 5th gear
4th gear for 8speed Auto
__________________
60-130mph 6.5s X4M #HCP
60-130mph 5.0s G80 M3 #OrlandoAutowerks Sauce

IG: @bmwF9XG80

Appreciate 0
      02-12-2017, 01:05 AM   #9
MRufo
Private First Class
United_States
36
Rep
123
Posts

Drives: M2
Join Date: Oct 2016
Location: Gaia

iTrader: (0)

Well I guess that was a waste of $90-lol
At least it sounded good and I got a video!
Appreciate 0
      02-12-2017, 01:55 AM   #10
SeanWRT
Colonel
SeanWRT's Avatar
3179
Rep
2,577
Posts

Drives: E90 M3 & F87 M2
Join Date: Sep 2015
Location: Shanghai

iTrader: (1)

This gear thing shocks me to an point where I'm questioning the validity of all the previous dyno results posted here.

And tyre size plays the same role (as gear ratio) as well should the owner doesnt keep factory tyre diameter, which happens so often when upgrading to a bigger size.
__________________
Lemania 2320
Appreciate 1
BAN_M2C4178.00
      02-17-2017, 01:13 AM   #11
kiysersosae
Lieutenant
kiysersosae's Avatar
United Kingdom
433
Rep
571
Posts

Drives: 1M, M2CS, M3CS
Join Date: Jul 2013
Location: United Kingdom

iTrader: (0)

Ultimately, if you are looking for gains a stock run and a tuned run back to back in the same gear will tell you all you need to know, regardless of gear selected as you are only looking for the delta between the two.
Appreciate 1
FSociety3811.50
      02-17-2017, 02:33 AM   #12
R0ME0
"The Midas Touch"
R0ME0's Avatar
519
Rep
1,055
Posts

Drives: F87 LBB ///M2
Join Date: Aug 2007
Location: Seattle, WA

iTrader: (14)

Garage List
2017 M2  [10.00]
2008 Z4M - SOLD  [0.00]
You in for some AP work?

They gonna support our platform yet or what?
Appreciate 0
      02-17-2017, 10:21 AM   #13
rich8102
Private First Class
United_States
37
Rep
123
Posts

Drives: 2017 LBB M2
Join Date: Jan 2014
Location: North Port FL

iTrader: (1)

With a 15% drivetrain loss 310hp is spot on.
Appreciate 0
      02-17-2017, 04:56 PM   #14
zenmaster
Brigadier General
United_States
1577
Rep
3,888
Posts

Drives: '17 M2
Join Date: Mar 2007
Location: Atlanta

iTrader: (1)

Quote:
Originally Posted by rich8102 View Post
With a 15% drivetrain loss 310hp is spot on.
"Spot on"? Spot on what? Lol!

1) Premature assumption w/out established references from the particular dyno used.
2) who has published an accurate engine HP measurement? Not BMW.
3) where did 15% come from?

Add all that up and error is so large too be useless.


Dynojets have been consistent @ 330-340whp on 93.
Appreciate 0
      02-17-2017, 07:16 PM   #15
rich8102
Private First Class
United_States
37
Rep
123
Posts

Drives: 2017 LBB M2
Join Date: Jan 2014
Location: North Port FL

iTrader: (1)

Everywhere I have read the M2 has 365hp. A basic dynojet google search will show an average drivetrain loss of 15%. This would equate to 310hp.
I understand there is no references form this particular dyno but 310 doesn't seem unreasonable from some crude calculations.
Appreciate 0
      02-17-2017, 07:58 PM   #16
zenmaster
Brigadier General
United_States
1577
Rep
3,888
Posts

Drives: '17 M2
Join Date: Mar 2007
Location: Atlanta

iTrader: (1)

So 340whp is spot on too! Great! What's the point?
Appreciate 0
      02-17-2017, 08:53 PM   #17
rich8102
Private First Class
United_States
37
Rep
123
Posts

Drives: 2017 LBB M2
Join Date: Jan 2014
Location: North Port FL

iTrader: (1)

Quote:
Originally Posted by zenmaster View Post
So 340whp is spot on too! Great! What's the point?
For sure man!
The OP was stating his numbers were lower than expected. That's all.
Appreciate 0
Post Reply

Bookmarks


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 06:13 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