Sport display readings higher than factory claims

AKRM2C · 08-26-2021, 11:54 AM

Hi M owners.

I went for a drive and my friend beside me is recording the acceleration.

I noticed the Peak HP reading from the sport display is higher than what the factory claims

Bmw claimed the M2C has a peak output of 410hp. (Correct me if im wrong)

In mine, as shown on the picture, the peak reading is about 450hp. (The one i put an arrow on is the peak)

This is a rolling (20km/h) kickdown full throttle.

My car has catless downpipe and catback akra exhaust.

And NO Tune!

Do you think this is normal?

There is a wheel spin when it jumps to that 450hp mark… when no wheel spin, it maxed out at 410hp-420hp. Maybe this is what causes it to reach 450hp?

Many many thanks guys!

beanfritter · 08-26-2021, 01:08 PM

It's there for novelty. If it was supposed to be accurate, I think they would have made it easier to read.

pablom2c · 08-26-2021, 01:14 PM

Good catch I haven't checked mine to be honest.

Maybe the claimed BMW figures is whp and iDrive shows bhp?

Is your car stock? Some tuning flashes also change the iDrive display values.

Enabled · 08-26-2021, 01:20 PM

The question is what does it display at around 6000-6500 rpm when power is sustained without wheelspin?

Low gear with wheelspin will not show accurately, and especially on older firmware in the NBT Evo and DME.
I wouldn't concern myself much with it.

detroitm2 · 08-26-2021, 01:37 PM

No guage inside your car is going to accurately display horsepower. Cars just don't work like that.

As someone else said, it's just a novelty.

AKRM2C · 08-26-2021, 06:55 PM

Car has Stock tune. Just an exhaust system

akkando · 08-26-2021, 09:00 PM

Well it matches the m2 CS power numbers. Did BMW accidentally give you a CS DME tuning or at least set the idrive power gauges to CS settings?

AKRM2C · 08-26-2021, 09:05 PM

Quote:

Originally Posted by akkando

Well it matches the m2 CS power numbers. Did BMW accidentally give you a CS DME tuning or at least set the idrive power gauges to CS settings?

No. The stock gauges in the M2C is 480hp max. Thats what i know

AKRM2C · 08-26-2021, 09:09 PM

Quote:

Originally Posted by Enabled

The question is what does it display at around 6000-6500 rpm when power is sustained without wheelspin?

Low gear with wheelspin will not show accurately, and especially on older firmware in the NBT Evo and DME.
I wouldn't concern myself much with it.

6000-6500rpm will display 410-420hp. The 450 can only be touched on first boost spike on kickdown.

Car's istep is an 11/20 version.

AKRM2C · 08-26-2021, 09:50 PM

this is the recorded video

after the first gear shift, it never wants to touch back to the 450. i have never tuned the car.

The only thing i did software wise is coding in an apple carplay. Thats it

AKRM2C · 08-27-2021, 12:56 AM

Quote:

Originally Posted by pablom2c

Good catch I haven't checked mine to be honest.

Maybe the claimed BMW figures is whp and iDrive shows bhp?

Is your car stock? Some tuning flashes also change the iDrive display values.

No the car has not been tuned.

Texazon · 03-21-2022, 06:00 AM

My car has not been tuned aswell and it shows 480hp/640nm on a display. Weird.

08-26-2021, 11:54 AM	#1
AKRM2C Just an F Series Owner 24 Rep 68 Posts Drives: 2020 BMW M2 Competition Join Date: May 2021 Location: Jakarta, Indonesia iTrader: (0)	Hi M owners. I went for a drive and my friend beside me is recording the acceleration. I noticed the Peak HP reading from the sport display is higher than what the factory claims Bmw claimed the M2C has a peak output of 410hp. (Correct me if im wrong) In mine, as shown on the picture, the peak reading is about 450hp. (The one i put an arrow on is the peak) This is a rolling (20km/h) kickdown full throttle. My car has catless downpipe and catback akra exhaust. And NO Tune! Do you think this is normal? There is a wheel spin when it jumps to that 450hp mark… when no wheel spin, it maxed out at 410hp-420hp. Maybe this is what causes it to reach 450hp? Many many thanks guys! Attached Images Last edited by AKRM2C; 08-26-2021 at 12:02 PM..
	Appreciate 0 Tweet Quote

08-26-2021, 01:08 PM	#2
beanfritter Enlisted Member 35 Rep 36 Posts Drives: 2020 BMW M2C Join Date: Mar 2020 Location: Bay Area iTrader: (0)	It's there for novelty. If it was supposed to be accurate, I think they would have made it easier to read.
	Appreciate 1 x233284.00 Quote

08-26-2021, 01:14 PM	#3
pablom2c Private First Class 125 Rep 174 Posts Drives: 2020 M2C Join Date: Sep 2015 Location: South America iTrader: (0)	Good catch I haven't checked mine to be honest. Maybe the claimed BMW figures is whp and iDrive shows bhp? Is your car stock? Some tuning flashes also change the iDrive display values. __________________ CURRENT: 2020 M2 Competition (BSM) Previous: 2008 135i
	Appreciate 0 Quote

08-26-2021, 01:20 PM	#4
Enabled Lieutenant Colonel 1410 Rep 1,803 Posts Drives: 328xd Wagon, M2 Competition Join Date: Jun 2018 Location: Houston iTrader: (0)	The question is what does it display at around 6000-6500 rpm when power is sustained without wheelspin? Low gear with wheelspin will not show accurately, and especially on older firmware in the NBT Evo and DME. I wouldn't concern myself much with it. __________________ -2014 328d Wagon, 8HP. Self-tuned, 270hp/430ft-lbs. -2019 M2 Competition MT, Alpine White. Self-tuned 560hp -2016 Mini Cooper S, MT. Many plans. Others: -E36 328is. 2000 Z3 Roady. 2003 VW Jetta TDI Manual. Estoril Z3M Coupe.
	Appreciate 0 Quote

08-26-2021, 01:37 PM	#5
detroitm2 Colonel 2429 Rep 2,526 Posts Drives: 2018 M2 Join Date: Aug 2018 Location: Michigan iTrader: (2) Garage List 2018 BMW M2 [0.00]	No guage inside your car is going to accurately display horsepower. Cars just don't work like that. As someone else said, it's just a novelty. __________________ 2018 M2 - Daily Driver/Track Car Motorcity BMWCCA Member Instagram \| YouTube
	Appreciate 0 Quote

08-26-2021, 06:55 PM	#6
AKRM2C Just an F Series Owner 24 Rep 68 Posts Drives: 2020 BMW M2 Competition Join Date: May 2021 Location: Jakarta, Indonesia iTrader: (0)	Car has Stock tune. Just an exhaust system
	Appreciate 0 Quote

08-26-2021, 09:00 PM	#7
akkando Major General 5865 Rep 6,635 Posts Drives: 17 M2 DCT LBB,11 e90 M3 ZCP IB Join Date: Jan 2017 Location: Bay Area iTrader: (1)	Well it matches the m2 CS power numbers. Did BMW accidentally give you a CS DME tuning or at least set the idrive power gauges to CS settings?
	Appreciate 0 Quote

08-26-2021, 09:50 PM	#10
AKRM2C Just an F Series Owner 24 Rep 68 Posts Drives: 2020 BMW M2 Competition Join Date: May 2021 Location: Jakarta, Indonesia iTrader: (0)	this is the recorded video after the first gear shift, it never wants to touch back to the 450. i have never tuned the car. The only thing i did software wise is coding in an apple carplay. Thats it Last edited by AKRM2C; 08-26-2021 at 09:59 PM..
	Appreciate 0 Quote

03-21-2022, 06:00 AM	#12
Texazon Registered 6 Rep 4 Posts Drives: BMW M2 Join Date: May 2021 Location: Poland iTrader: (0)	My car has not been tuned aswell and it shows 480hp/640nm on a display. Weird.
	Appreciate 0 Quote