Bimmerpost
3
/
4 Series
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications We had a flashed M340 on the dyno & pulled the air filter out just for fun, lost 7HP

Post Reply
 
Thread Tools Search this Thread
      12-05-2019, 04:10 PM   #1
chenry
Colonel
United_States
2346
Rep
2,964
Posts

Drives: BMWs
Join Date: Feb 2012
Location: SoCal Huntington Beach

iTrader: (8)

We had a flashed M340 on the dyno & pulled the air filter out just for fun, lost 7HP

So for fun we pulled the air filter out of a flashed M340 while it was on the dyno and did a couple back to back runs with a filter-less stock box ...end result? We lost consistently about 7 hp. Sorry don't remember the torque figures. I guess intake turbulence worked against the car.

Not trying to prove any point here and we weren't trying to accomplish anything one way or another - just playing around. And thought I would share the results with you all

Last edited by chenry; 12-05-2019 at 04:18 PM..
Appreciate 0
      12-05-2019, 06:07 PM   #2
The Nerd
Major
The Nerd's Avatar
420
Rep
1,106
Posts

Drives: 22 M3 Comp xDrive
Join Date: Apr 2013
Location: Ohio

iTrader: (0)

Quote:
Originally Posted by chenry View Post
So for fun we pulled the air filter out of a flashed M340 while it was on the dyno and did a couple back to back runs with a filter-less stock box ...end result? We lost consistently about 7 hp. Sorry don't remember the torque figures. I guess intake turbulence worked against the car.

Not trying to prove any point here and we weren't trying to accomplish anything one way or another - just playing around. And thought I would share the results with you all
Very interesting! Out of curiosity, what were the dyno #s and what kind of dyno?
Appreciate 0
      12-05-2019, 08:43 PM   #3
shawntech
The Wolf
shawntech's Avatar
United_States
247
Rep
987
Posts

Drives: stuff
Join Date: Oct 2013
Location: Midwest

iTrader: (0)

Garage List
  [0.00]
2019 BMW M850i conv ...  [0.00]
Yea I ran no filter at the track stock it was a tenth slower
Appreciate 1
0xdq36.00
      12-05-2019, 10:21 PM   #4
chenry
Colonel
United_States
2346
Rep
2,964
Posts

Drives: BMWs
Join Date: Feb 2012
Location: SoCal Huntington Beach

iTrader: (8)

Quote:
Originally Posted by The Nerd View Post
Very interesting! Out of curiosity, what were the dyno #s and what kind of dyno?
470ish WHP range and it was a dynojet
Appreciate 0
      12-06-2019, 01:51 AM   #5
Top Gon
Bashar
Top Gon's Avatar
United_States
389
Rep
1,116
Posts

Drives: 2023 BMW Z4 M40i
Join Date: Jun 2010
Location: Bay Area, CA

iTrader: (4)

This doesn't make sense.

Why is that?
Appreciate 0
      12-06-2019, 10:08 AM   #6
MG20i
Second Lieutenant
United_States
119
Rep
227
Posts

Drives: 2019 Mini Countryman S
Join Date: Nov 2019
Location: N. Florida

iTrader: (0)

Quote:
Originally Posted by chenry View Post
470ish WHP range and it was a dynojet
'Flashed' M340i.......and 470 WHEEL hp? Seriously? Has to also have upgraded turbo and exhaust, doesn't it??
__________________
Mike
No more BMWs
A truck and a couple motorcycles
Appreciate 0
      12-06-2019, 10:55 AM   #7
PunkSinatra
Private First Class
No_Country
78
Rep
107
Posts

Drives: Alpina D5S
Join Date: Mar 2013
Location: Bischofszell

iTrader: (0)

Quote:
Originally Posted by MG20i View Post
Quote:
Originally Posted by chenry View Post
470ish WHP range and it was a dynojet
'Flashed' M340i.......and 470 WHEEL hp? Seriously? Has to also have upgraded turbo and exhaust, doesn't it??
Quote:
Originally Posted by MG20i View Post
Quote:
Originally Posted by chenry View Post
470ish WHP range and it was a dynojet
'Flashed' M340i.......and 470 WHEEL hp? Seriously? Has to also have upgraded turbo and exhaust, doesn't it??
I'm sure he is talking about mission performance flash, and also quite sure car is stock.
Appreciate 0
      12-06-2019, 10:59 AM   #8
joes_m340
Private
joes_m340's Avatar
23
Rep
72
Posts

Drives: 2020 M340 xDrive
Join Date: Nov 2017
Location: AR

iTrader: (0)

Garage List
Quote:
Originally Posted by PunkSinatra View Post
Quote:
Originally Posted by MG20i View Post
Quote:
Originally Posted by chenry View Post
470ish WHP range and it was a dynojet
'Flashed' M340i.......and 470 WHEEL hp? Seriously? Has to also have upgraded turbo and exhaust, doesn't it??
Quote:
Originally Posted by MG20i View Post
Quote:
Originally Posted by chenry View Post
470ish WHP range and it was a dynojet
'Flashed' M340i.......and 470 WHEEL hp? Seriously? Has to also have upgraded turbo and exhaust, doesn't it??
I'm sure he is talking about mission performance flash, and also quite sure car is stock.
huh? tuned but stock?
__________________
2020 ///M340
Appreciate 0
      12-06-2019, 11:10 AM   #9
PunkSinatra
Private First Class
No_Country
78
Rep
107
Posts

Drives: Alpina D5S
Join Date: Mar 2013
Location: Bischofszell

iTrader: (0)

Quote:
Originally Posted by joes_m340 View Post
Quote:
Originally Posted by PunkSinatra View Post
Quote:
Originally Posted by MG20i View Post
Quote:
Originally Posted by chenry View Post
470ish WHP range and it was a dynojet
'Flashed' M340i.......and 470 WHEEL hp? Seriously? Has to also have upgraded turbo and exhaust, doesn't it??
Quote:
Originally Posted by MG20i View Post
Quote:
Originally Posted by chenry View Post
470ish WHP range and it was a dynojet
'Flashed' M340i.......and 470 WHEEL hp? Seriously? Has to also have upgraded turbo and exhaust, doesn't it??
I'm sure he is talking about mission performance flash, and also quite sure car is stock.
huh? tuned but stock?
Quote:
Originally Posted by joes_m340 View Post
Quote:
Originally Posted by PunkSinatra View Post
Quote:
Originally Posted by MG20i View Post
Quote:
Originally Posted by chenry View Post
470ish WHP range and it was a dynojet
'Flashed' M340i.......and 470 WHEEL hp? Seriously? Has to also have upgraded turbo and exhaust, doesn't it??
Quote:
Originally Posted by MG20i View Post
Quote:
Originally Posted by chenry View Post
470ish WHP range and it was a dynojet
'Flashed' M340i.......and 470 WHEEL hp? Seriously? Has to also have upgraded turbo and exhaust, doesn't it??
I'm sure he is talking about mission performance flash, and also quite sure car is stock.
huh? tuned but stock?
Stock I meant for Turbo and exhaust.
Appreciate 0
      12-06-2019, 11:13 AM   #10
chenry
Colonel
United_States
2346
Rep
2,964
Posts

Drives: BMWs
Join Date: Feb 2012
Location: SoCal Huntington Beach

iTrader: (8)

Car is/was mechanically stock (from the air filter to the exhaust tips and everything in between). Car was simply flashed and was running 93.

Hope this helps again we were just having some fun and thought I'd share with the forum

Last edited by chenry; 12-06-2019 at 11:13 AM.. Reason: added smiley face :-)
Appreciate 0
      12-06-2019, 11:41 AM   #11
MG20i
Second Lieutenant
United_States
119
Rep
227
Posts

Drives: 2019 Mini Countryman S
Join Date: Nov 2019
Location: N. Florida

iTrader: (0)

Quote:
Originally Posted by chenry View Post
Car is/was mechanically stock (from the air filter to the exhaust tips and everything in between). Car was simply flashed and was running 93.

Hope this helps again we were just having some fun and thought I'd share with the forum
THAT......is fookin crazy! Awesome to hear. Now if we could just get similar results and have some kind of warranty agreement/protection.

I know.....not likely.....
__________________
Mike
No more BMWs
A truck and a couple motorcycles
Appreciate 0
      12-06-2019, 12:05 PM   #12
Pacman123
Private First Class
44
Rep
114
Posts

Drives: Mazda 3 , BMW M340i Xdrive
Join Date: Oct 2019
Location: PA

iTrader: (0)

100 more hp at the wheels? From just a tune. That's pretty amazing.
Appreciate 0
      12-06-2019, 04:03 PM   #13
TheBenchmark
Private
59
Rep
65
Posts

Drives: 2020 M340i
Join Date: Sep 2019
Location: New Hill NC

iTrader: (0)

Dyno sheet or it didn't happen 🤷*♂️
Appreciate 2
haruny96.50
      12-08-2019, 12:31 PM   #14
chenry
Colonel
United_States
2346
Rep
2,964
Posts

Drives: BMWs
Join Date: Feb 2012
Location: SoCal Huntington Beach

iTrader: (8)

Quote:
Originally Posted by TheBenchmark View Post
Dyno sheet or it didn't happen ��*♂️
TheBenchmark
haruny
joes_m340

Here you go gents sorry for the delay, hope this helps

I don't have a non-filter (7 WHP loss) graph to show just the 470ish WHP but I'm assuming this was the one you were asking about (meaning I'm thinking you were looking for some validation on the 470 number vs our little game of throwing a filter on the ground and losing 7HP)
Attached Images
 

Last edited by chenry; 12-08-2019 at 02:36 PM.. Reason: spelling
Appreciate 2
haruny96.50
      12-08-2019, 01:36 PM   #15
joes_m340
Private
joes_m340's Avatar
23
Rep
72
Posts

Drives: 2020 M340 xDrive
Join Date: Nov 2017
Location: AR

iTrader: (0)

Garage List
Quote:
Originally Posted by chenry View Post
Quote:
Originally Posted by TheBenchmark View Post
Dyno sheet or it didn't happen *
TheBenchmark
haruny
joes_m340

Here you go gents sorry for the delay, hope this helps

I don't have a non-filter (7 WHP loss) graph to show just the 470ish WHP but I'm assuming this was the one you were asking about (meaning I'm thinking you were looking for some validation on the 470 number vs our little game of throwing a filter on the ground and losing 7HP)
beautiful!
__________________
2020 ///M340
Appreciate 0
      12-10-2019, 04:34 AM   #16
IMS-340C
Major
IMS-340C's Avatar
Egypt
395
Rep
1,010
Posts

Drives: Self Tuned 340i 8AT RWD
Join Date: May 2018
Location: Cairo

iTrader: (0)

Did you leave the box opened after removing the filter?

Quote:
Originally Posted by chenry View Post
So for fun we pulled the air filter out of a flashed M340 while it was on the dyno and did a couple back to back runs with a filter-less stock box ...end result? We lost consistently about 7 hp. Sorry don't remember the torque figures. I guess intake turbulence worked against the car.

Not trying to prove any point here and we weren't trying to accomplish anything one way or another - just playing around. And thought I would share the results with you all
__________________
2018 340i 8AT RWD - M Sport - Catless MPPSK - Stock Turbo - Stock HPFP
-------- Tunes: Self Made Tunes - MHD ------ Fuel: 92RON/87OCT --------
Appreciate 0
      12-10-2019, 01:03 PM   #17
chenry
Colonel
United_States
2346
Rep
2,964
Posts

Drives: BMWs
Join Date: Feb 2012
Location: SoCal Huntington Beach

iTrader: (8)

Quote:
Originally Posted by IMS-340MP View Post
Did you leave the box opened after removing the filter?
Hi IMS-340MP
No it was closed back up

Last edited by chenry; 12-10-2019 at 01:04 PM.. Reason: typo
Appreciate 1
IMS-340C394.50
      12-11-2019, 05:08 AM   #18
IMS-340C
Major
IMS-340C's Avatar
Egypt
395
Rep
1,010
Posts

Drives: Self Tuned 340i 8AT RWD
Join Date: May 2018
Location: Cairo

iTrader: (0)

Then I guess this will remain a mystery

Quote:
Originally Posted by chenry View Post
Hi IMS-340MP
No it was closed back up
__________________
2018 340i 8AT RWD - M Sport - Catless MPPSK - Stock Turbo - Stock HPFP
-------- Tunes: Self Made Tunes - MHD ------ Fuel: 92RON/87OCT --------
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 09:09 AM.




g20
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