BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW Z4 Forums (G29) BMW Z4 (G29) General Forum 2020 Z4 M40i Dyno

Post Reply
 
Thread Tools Search this Thread
      06-18-2019, 08:05 PM   #23
L27
Private
L27's Avatar
Tunisia
78
Rep
62
Posts

Drives: *
Join Date: Aug 2014
Location: Tunis

iTrader: (0)

Quote:
Originally Posted by teaston View Post
Looks like it could be producing a fair bit more than the claimed 340hp then!
340 in the European version, but the US Z4 M40i has 382 hp
Appreciate 0
      06-18-2019, 08:27 PM   #24
M3 Adjuster
Banned
Albania
7833
Rep
11,819
Posts

Drives: 1M, X1 M Sport, E46 325ic
Join Date: Mar 2008
Location: Dallas, Tx

iTrader: (0)

Quote:
Originally Posted by Joe240 View Post
382hp 365tq at the crank is what it's rated at. .


Quote:
Originally Posted by L27 View Post
340 in the European version, but the US Z4 M40i has 382 hp


Quote:
Originally Posted by ynguldyn View Post
This is the US version which is spec'ed at 50hp more than the puny European one.


Quote:
Originally Posted by teaston View Post
What the hell!?

Is this very late payback for the E36 M3?
actually.... in a sense... yes..

Back in the days of the E30 M3.. the US got less hp because we had the catalyzed E30 M3 exhaust.
With the E36 M3.. the US got a Single throttle body model.. not the 6 individual Throttle bodies..

(Back then... a car needed " M throttle bodies" to really be an M car... (HEHEHE ... I kid for those actually old enough to understand this.... but seriously.. the US E36 M3 versions were called 330is (1995) and 332is (1996-1999) by many original M fans.... due to the lack of ITBs.)

Now that Europe has stricter emissions than the US.. the shoe is on the other foot and we get the higher rated versions now.. but at least all cars get " M mirrors..."


Quote:
Originally Posted by PrionFawkes View Post

Head over stateside mate, we get the tasty versions now.

Last edited by M3 Adjuster; 06-18-2019 at 08:35 PM..
Appreciate 1
dmboone254472.00

      06-18-2019, 08:39 PM   #25
DK__LA
IDKBRO M4
DK__LA's Avatar
United_States
151
Rep
158
Posts

Drives: 2018 M4 ZCP
Join Date: Apr 2018
Location: Los Angeles

iTrader: (0)

This car must be stupid fast
Appreciate 1
1-2MANY33.00

      06-18-2019, 08:40 PM   #26
nullspace
Private First Class
33
Rep
120
Posts

Drives: 2020 Z4 m40i
Join Date: Sep 2008
Location: Seattle Area

iTrader: (0)

I know I'm being pedantic, but a 15% loss with 373.5 WHP would be 439 at the crank.

I suspect people are multiplying by 1.15, but that's incorrect. You have to divide by .85 since the 15% figure relates to the original crank value, not the WHP.
Appreciate 2
scrammer356.00

      06-19-2019, 03:51 AM   #27
Steve_335d
Enlisted Member
England
62
Rep
37
Posts

Drives: F30 335d M-Sport
Join Date: Sep 2018
Location: Manchester, UK

iTrader: (0)

So when the UK is finally out of the EU, BMW will be putting an extra 50hp on all of our cars!?!

That's reason enough to leave right there
__________________
2016 F30 335d (370bhp 780nm)
Appreciate 1
scrammer356.00

      06-19-2019, 04:00 AM   #28
Joe240
Major
Joe240's Avatar
United_States
2288
Rep
1,252
Posts

Drives: 2020 Z4 M40i
Join Date: Jul 2016
Location: Pensacola

iTrader: (0)

Garage List
2020 Z4 M40i  [0.00]
2019 BMW X3 M40i  [0.00]
Quote:
Originally Posted by nullspace View Post
I know I'm being pedantic, but a 15% loss with 373.5 WHP would be 439 at the crank.

I suspect people are multiplying by 1.15, but that's incorrect. You have to divide by .85 since the 15% figure relates to the original crank value, not the WHP.
The 373hp run I would look at as abnormal because of heat soak. Gained hp, loss tq so assuming the engine compensated by pulling timing and dropping boost to generate less heat runs 1 and 3 were after a 10 minute cool down so it showed a more regular power and tq curve IMO. But Iím not 100% familiar with how BMW programming works to counter heat soak
Appreciate 0
      06-19-2019, 10:18 AM   #29
moff
Colonel
moff's Avatar
United Kingdom
910
Rep
2,196
Posts

Drives: X3M Competition
Join Date: Jan 2008
Location: Nottingham GB

iTrader: (0)

Quote:
Originally Posted by L27 View Post
Quote:
Originally Posted by teaston View Post
Looks like it could be producing a fair bit more than the claimed 340hp then!
340 in the European version, but the US Z4 M40i has 382 hp
This is only with the Z4 M40i

The M340i has 374hp - still down a few horses. I've no idea why the UK / Euro Z4M has such low power over here - it's not emissions related.

For info the X3 M40i has 360hp - so basically B58 + MPPSK
__________________
2019 X3M Competition, Toronto Red, Adelaide Grey, Pano roof, carbon trim, Wireless charging, ventilated seats, sun protection glass

Gone!:
2017 440i Coupe MPPSK, 2015 BMW 640d Coupe
Appreciate 1
L2777.50

      06-19-2019, 12:01 PM   #30
PrionFawkes
Private
82
Rep
80
Posts

Drives: G29 Z4 M40i (2020)
Join Date: Sep 2018
Location: Chattanooga, TN

iTrader: (0)

@Joe240 congrats on making it to Jalopnik's front page.
Appreciate 1
Joe2402287.50

      06-19-2019, 01:12 PM   #31
Joe240
Major
Joe240's Avatar
United_States
2288
Rep
1,252
Posts

Drives: 2020 Z4 M40i
Join Date: Jul 2016
Location: Pensacola

iTrader: (0)

Garage List
2020 Z4 M40i  [0.00]
2019 BMW X3 M40i  [0.00]
Quote:
Originally Posted by PrionFawkes View Post
@Joe240 congrats on making it to Jalopnik's front page.
Dang I had no idea! Thanks for pointing this out! Iíve been super busy at work
Appreciate 1
gblansten891.00

      06-19-2019, 02:30 PM   #32
DPelletier
Second Lieutenant
Canada
264
Rep
256
Posts

Drives: 2020 Z4 M40i
Join Date: May 2019
Location: Kelowna, B.C. Canada

iTrader: (0)

It would be even cooler if Jalopnik made sense; they used the average rather than the best pull and called it 368whp which they somehow equate to " the Z4's power rating of 382 HP at the crank is probably fairly accurate, accounting for driveline losses." Huh? ......sounds like they believe the driveline losses on the Z4 are 4%? Using a more reasonable 10-15% the real BHP caculated from the avg rather than best pull would be 410 to 420hp.....meaning that the engine is underrated by at least 28hp

Dave
Appreciate 0
      06-20-2019, 03:14 PM   #33
F87 M2CS
Second Lieutenant
F87 M2CS's Avatar
Cyprus
151
Rep
210
Posts

Drives: F87 M2CS 6MT (waiting list)
Join Date: Jan 2018
Location: Nicosia

iTrader: (0)

I think the og m2 is understated as well the m3/4 ??
__________________
///M POWER
Appreciate 0
      06-25-2019, 03:29 PM   #34
DPelletier
Second Lieutenant
Canada
264
Rep
256
Posts

Drives: 2020 Z4 M40i
Join Date: May 2019
Location: Kelowna, B.C. Canada

iTrader: (0)

This article makes more sense so I'll just leave it here...:-)

https://www.motor1.com/news/355876/2...-z4-dyno-test/


Cheers,
Dave
Appreciate 2
Joe2402287.50

      07-04-2019, 02:54 PM   #35
Brake_Late
Brigadier General
Brake_Late's Avatar
Norway
1903
Rep
3,303
Posts

Drives: 2015 F82 M4 FIREORANGE2
Join Date: Nov 2016
Location: Manhattan Beach

iTrader: (1)

Grabbed these spy shots this morning at corporate HQ parking lot before security rolled thru with " a look " in an X6m. Haha Enjoy.

PS- the car looked very capable and cool but I have to say ... looking at the brakes ... I was sort of shocked and definitely disappointed by what I saw for such a performance oriented car - these brakes look like they came from the 80s.
Attached Images
          
__________________
Eendraght Maeckt Macht
FOF82,3pedals,MPE,CCBs,Multicams,
CarbonStrucktureAnthracite, CF_Everything
BMWPhotoVin, 01of01, GTS DCT, EPS, MDM,
CS EDC,Analog Dip ,GTS parts.
Euro Vin e30 M3, FIA cage / 14.7 p / w ratio.
Euro E30 touring G30 MSport i3s LBB X5M
3.2carrera

https://www.youtube.com/channel/UClRTsfNzuz_EjUBu59UCykA
Appreciate 0
      07-04-2019, 03:46 PM   #36
DPelletier
Second Lieutenant
Canada
264
Rep
256
Posts

Drives: 2020 Z4 M40i
Join Date: May 2019
Location: Kelowna, B.C. Canada

iTrader: (0)

Quote:
Originally Posted by Brake_Late View Post
.. looking at the brakes ... I was sort of shocked and definitely disappointed by what I saw for such a performance oriented car - these brakes look like they came from the 80s.
From Motor Trend: The 2020 Toyota Supra comes standard with 13.7-inch ventilated steel brake rotors up front, which are clamped down by large four-piston calipers. In back, there are single-piston floating calipers. Brembo is a reputable supplier of high-performance brake systems, so seeing Brembos on the Supra is no surprise. What is surprising to me is that, for some reason, the calipers were left unbranded. If I were a Supra owner, I'd want to show off my beefy stock brakes with Brembo-stamped calipers at every possible opportunity.

and: Brembo 13.7-inch front brakes with 4-piston calipers arrest the speed, no matter how fast the Supra is going. The only performance option is larger rear brakes; 13.0-inch rotors are standard, while 13.6-inch rotors are optional and both are clamped down upon by single, floating calipers.

It’s the end of a 5-hour track day and the brakes have never faded and the car has remained stable even under the heaviest braking. I expected it to bobble during braking given its short wheelbase.

...and another; The stamina of the engine pushes the car past 100 miles per hour on Summit Point's shortened back straight (in this case due to cones), but the big four-piston Brembo brake calipers and 13.7-inch rotors provide ample stopping power.

IIRC, I saw a 60-0 distance of 97 ft......for comparison, the 15" "superperformance" brakes on my Jaguar F type were good for 103 ft.

It would appear the brakes work well..... so now about the HP on the Z4...

Dave
Appreciate 1
Brake_Late1903.00

      07-04-2019, 03:57 PM   #37
Brake_Late
Brigadier General
Brake_Late's Avatar
Norway
1903
Rep
3,303
Posts

Drives: 2015 F82 M4 FIREORANGE2
Join Date: Nov 2016
Location: Manhattan Beach

iTrader: (1)

Those brakes are whack. Period.
__________________
Eendraght Maeckt Macht
FOF82,3pedals,MPE,CCBs,Multicams,
CarbonStrucktureAnthracite, CF_Everything
BMWPhotoVin, 01of01, GTS DCT, EPS, MDM,
CS EDC,Analog Dip ,GTS parts.
Euro Vin e30 M3, FIA cage / 14.7 p / w ratio.
Euro E30 touring G30 MSport i3s LBB X5M
3.2carrera

https://www.youtube.com/channel/UClRTsfNzuz_EjUBu59UCykA
Appreciate 0
      07-04-2019, 04:05 PM   #38
DPelletier
Second Lieutenant
Canada
264
Rep
256
Posts

Drives: 2020 Z4 M40i
Join Date: May 2019
Location: Kelowna, B.C. Canada

iTrader: (0)

Quote:
Originally Posted by Brake_Late View Post
Those brakes are whack. Period.
Sorry is "whack" good or bad?

Cheers,
Dave
Appreciate 1
SakhirM410004.00

      07-04-2019, 04:19 PM   #39
Brake_Late
Brigadier General
Brake_Late's Avatar
Norway
1903
Rep
3,303
Posts

Drives: 2015 F82 M4 FIREORANGE2
Join Date: Nov 2016
Location: Manhattan Beach

iTrader: (1)

Quote:
Originally Posted by DPelletier View Post
Quote:
Originally Posted by Brake_Late View Post
Those brakes are whack. Period.
Sorry is "whack" good or bad?

Cheers,
Dave
Haha. I was thinking bad. They looked like brakes from at least as far back as maybe 2014 !? But, now I realize why... lol since I don't follow these type of cars ever or much... I didn't even realize that this is a Toyota ! So, since realizing this ... I now know why the brakes look so caveman.
__________________
Eendraght Maeckt Macht
FOF82,3pedals,MPE,CCBs,Multicams,
CarbonStrucktureAnthracite, CF_Everything
BMWPhotoVin, 01of01, GTS DCT, EPS, MDM,
CS EDC,Analog Dip ,GTS parts.
Euro Vin e30 M3, FIA cage / 14.7 p / w ratio.
Euro E30 touring G30 MSport i3s LBB X5M
3.2carrera

https://www.youtube.com/channel/UClRTsfNzuz_EjUBu59UCykA
Appreciate 0
      07-05-2019, 08:53 PM   #40
hans007
Captain
495
Rep
993
Posts

Drives: 2020 BMW M340i
Join Date: Aug 2012
Location: Los Angeles, CA

iTrader: (0)

Quote:
Originally Posted by nullspace View Post
I know I'm being pedantic, but a 15% loss with 373.5 WHP would be 439 at the crank.

I suspect people are multiplying by 1.15, but that's incorrect. You have to divide by .85 since the 15% figure relates to the original crank value, not the WHP.
Quote:
Originally Posted by nullspace View Post
I know I'm being pedantic, but a 15% loss with 373.5 WHP would be 439 at the crank.

I suspect people are multiplying by 1.15, but that's incorrect. You have to divide by .85 since the 15% figure relates to the original crank value, not the WHP.
the 15% number is always bandied about as what it is , but probably inaccurate these days as transmissions are more efficient. they all have lock up clutches etc. I am not sure what the real number would but that rule of thumb 15% is probably not an accurate rule of thumb these days
Appreciate 0
      07-07-2019, 12:14 PM   #41
DPelletier
Second Lieutenant
Canada
264
Rep
256
Posts

Drives: 2020 Z4 M40i
Join Date: May 2019
Location: Kelowna, B.C. Canada

iTrader: (0)

Quote:
Originally Posted by Who's on first View Post
Modern cars don't have a 15% drivetrain loss.

10% is more realistic.
Maybe so....I suspect the real drivetrain loss is between those two numbers but even at 10%, that means crank hp of the "382hp" version is 415hp. Sounds good to me.

Dave
Appreciate 0
      07-28-2019, 05:44 PM   #42
barryv@ridings.co.uk
Registered
0
Rep
2
Posts

Drives: BMW Z4 m40i
Join Date: Jul 2019
Location: Leeds

iTrader: (0)

Quote:
Originally Posted by pookgai View Post
Quote:
Originally Posted by teaston View Post
Quote:
Originally Posted by ynguldyn View Post
This is the US version which is spec'ed at 50hp more than the puny European one.
What the hell!?

Is this very late payback for the E36 M3?
The EU version has extra emission equipment that lowers the HP output
Can the uk car have the restriction removed simply to match the us spec at 382bhp
I have a uk M40i and would to boost the hp to 382 without adding aftermarket kit or chips
Appreciate 0
      07-28-2019, 05:48 PM   #43
Joe240
Major
Joe240's Avatar
United_States
2288
Rep
1,252
Posts

Drives: 2020 Z4 M40i
Join Date: Jul 2016
Location: Pensacola

iTrader: (0)

Garage List
2020 Z4 M40i  [0.00]
2019 BMW X3 M40i  [0.00]
Quote:
Originally Posted by barryv@ridings.co.uk View Post
Can the uk car have the restriction removed simply to match the us spec at 382bhp
I have a uk M40i and would to boost the hp to 382 without adding aftermarket kit or chips
Only way to switch it would be to remove the particulate filter and then flash the ECU.
Appreciate 2
      07-28-2019, 05:49 PM   #44
barryv@ridings.co.uk
Registered
0
Rep
2
Posts

Drives: BMW Z4 m40i
Join Date: Jul 2019
Location: Leeds

iTrader: (0)

Boost a uk M40i from 335bhp to the US 382bhp

Does anyone know if a uk M40i can be simply upgraded or re specced to match the US spec 382 bhp
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 01:36 AM.




bmw
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, 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