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      04-08-2016, 07:22 AM   #1
G8rGrl
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BMW M2 Dyno Figures / Numbers

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Enjoy.

EDIT: Dyno figures from another run. Details posted by member Nine Lives:

Quote:
Quote:

" Just from an hour or so ago:

https://www.facebook.com/TuningTechF...08860/?fref=nf

331 WHP 325 WTQ

I believe with 93 octane and Maryland "


Which seems a little more like it .Accordingly 331 WHP is ~ 388 crank hp using 6MT.(I assume these figures have been obtained with a relatively tight engine).

And another different dyno run:

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      04-08-2016, 07:31 AM   #2
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287?

Hmmm...

Of course there are a plethora of factors here.

But in just going to hush and wait for my car to come in. One month to go.
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      04-08-2016, 07:34 AM   #3
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Quote:
Originally Posted by Driver37 View Post
287?

Hmmm...
Something doesn't add up...That is well over 20% loss. They did say something about the car's computer kicked in when it detected something was off (Fuel?). I hope there is another dyno test soon to baseline the results. Not that I car that much as I will enjoy my car regardless!
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      04-08-2016, 07:38 AM   #4
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Quote:
Originally Posted by G8rGrl
Enjoy

Thanks.

It's an Australian Dyno Dynamics chassis dynamometer. These provide lower figures than most and they advised of this in the feature. The car did make the rated torque on their machine however.
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      04-08-2016, 07:40 AM   #5
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Quote:
Originally Posted by MTHRAR
Quote:
Originally Posted by Driver37 View Post
287?

Hmmm...
Something doesn't add up...That is well over 20% loss. They did say something about the car's computer kicked in when it detected something was off (Fuel?). I hope there is another dyno test soon to baseline the results. Not that I car that much as I will enjoy my car regardless!

I think that the pull was so looooooong that the overboost feature probably ended during the pull and torque fell off substantially.

Hp follows torque naturally ... So the top end fell flat. It's not called a " heartbreaker " Dyno for nothing. It's that particular type of Dyno.

More Dyno tests will come. I personally prefer Dynojet.
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      04-08-2016, 07:49 AM   #6
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They dyno all the cars above 1 mile of the sea level, also they used low octane quality fuel, and that also adds to the factor why hp was so low, and why computer had to re-calibrate things.

So, overall if terms were fair, I think it could easily pull 330 at the wheels.
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      04-08-2016, 07:51 AM   #7
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Cheers
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      04-08-2016, 08:02 AM   #8
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By no means am I a Dyno expert. Here are a few questions I have.

1. They used 91 octane (BMW recommended) but I feel 93 would have yielded slightly better results (+1 maybe +2?)

2. Does anyone think if they put additional fans on the fangs that would have helped?

3. That was a nightly long pull as well.


More videos to come of dyno'd M2s hopefully. I was expecting it to at least break 300. And I was hoping for low teens.
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      04-08-2016, 08:10 AM   #9
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Interesting, thanks for posting. Well we'll just need to tune the beast won't we
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      04-08-2016, 08:14 AM   #10
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Utterly meaningless w/out other car's results on that same dyno with same conditions.
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      04-08-2016, 08:38 AM   #11
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Quote:
Originally Posted by zenmaster View Post
Utterly meaningless w/out other car's results on that same dyno with same conditions.
Agreed.
It would have been good if they could have shown the results for the M 3/4 and the RS3 under the same conditions,although 300 at the wheels equates to 370 at the crank,so taking into effect the fuel quality and ASL specifics and the fact the dyno tells it like it is,its not that far out,although still disappointing if " that's all she wrote "
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      04-08-2016, 08:53 AM   #12
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Quote:
Originally Posted by Nine Lives View Post
although 300 at the wheels equates to 370 at the crank,
Depends on the drivetrain loss of the particular car. My 2007 335i made 287 at the wheels.. again meaningless.
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      04-08-2016, 08:54 AM   #13
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Quote:
Originally Posted by Nine Lives
Quote:
Originally Posted by zenmaster View Post
Utterly meaningless w/out other car's results on that same dyno with same conditions.
Agreed.
It would have been good if they could have shown the results for the M 3/4 and the RS3 under the same conditions,although 300 at the wheels equates to 370 at the crank,so taking into effect the fuel quality and ASL specifics and the fact the dyno tells it like it is,its not that far out,although still disappointing if " that's all she wrote "
I'll happily set a baseline after the break-in if you guys want. I have a few local dynojets to lift our spirits.
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      04-08-2016, 09:00 AM   #14
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Quote:
Originally Posted by ashburyn54 View Post
I'll happily set a baseline after the break-in if you guys want. I have a few local dynojets to lift our spirits.
That's an excellent idea,remember to use decent fuel
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      04-08-2016, 09:02 AM   #15
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Quote:
Originally Posted by Nine Lives
Quote:
Originally Posted by ashburyn54 View Post
I'll happily set a baseline after the break-in if you guys want. I have a few local dynojets to lift our spirits.
That's an excellent idea,remember to use decent fuel
We have 93 here all over. So we will be good. I would love to do a 93 run and some 100ish to see how far the DME learns up with timing.
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      04-08-2016, 09:05 AM   #16
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Quote:
Originally Posted by ashburyn54 View Post
We have 93 here all over. So we will be good. I would love to do a 93 run and some 100ish to see how far the DME learns up with timing.
In PA we have 93 as well. In fact there is one local gas station that has ethanol free 93!!!
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      04-08-2016, 09:08 AM   #17
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Is it possible, that something needs to be done at the dealer, post break in? I know for the DCT cars, launch control is disabled until service one.
Just a thought... Results do seem lower than expected.
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      04-08-2016, 09:10 AM   #18
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Quote:
Originally Posted by MTHRAR
Quote:
Originally Posted by ashburyn54 View Post
We have 93 here all over. So we will be good. I would love to do a 93 run and some 100ish to see how far the DME learns up with timing.
In PA we have 93 as well. In fact there is one local gas station that has ethanol free 93!!!
Nice! Yeah PA like to list the ethanol free fuels. I actually like ethanol so it doesn't bother me. Hopefully this fuel system can take 85% ethanol
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      04-08-2016, 09:25 AM   #19
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Quote:
Originally Posted by ashburyn54 View Post
Nice! Yeah PA like to list the ethanol free fuels. I actually like ethanol so it doesn't bother me. Hopefully this fuel system can take 85% ethanol
Agreed. I ran a 40/60 e85 mix with 93 in my 335i with the N54. The car responded VERY well to this e85 tune I was running.

Once the tuners get a hold of this M2, I think we will definitely see some e85 in this car
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      04-08-2016, 09:41 AM   #20
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Quote:
Originally Posted by BFLY View Post
Is it possible, that something needs to be done at the dealer, post break in? I know for the DCT cars, launch control is disabled until service one.
Just a thought... Results do seem lower than expected.
Perhaps an appointment with Mr. JB...........4 wouldn't go amiss
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      04-08-2016, 09:51 AM   #21
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For some perspective, I had my m235i dynoed on a Dyno Dynamics at sea level in a 10C ambient room and got 316hp (crank that is, 266 hp wheel adjusted) stock running winter tyres (no where near ideal admittedly) that did need to cool down between runs.

With JB4 running map 2 on 93 octane fuel it was putting out 349.6 hp (crank) and 381.2 lb-ft of torque (crank).

Its going back on soon with summer tyres and sport cat. Will report back on this.

I think people may confuse correct/ realistic with overinflated "wheel horsepower" numbers that other dynos are set up to produce. Bigger is always better right?
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      04-08-2016, 10:02 AM   #22
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Not sure what to think of this dyno result, but I expect it will do around 340-350 rwhp on a dynojet.
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