Dyno Chart: 2017 BMW S1000RR vs. 2017 GSX-R1000 - BMW S1000RR Forums: BMW Sportbike Forum
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post #1 of 22 (permalink) Old 03-01-2018, 12:20 PM Thread Starter
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Dyno Chart: 2017 BMW S1000RR vs. 2017 GSX-R1000

We've had requests for a dyno comparison between these two bikes, so here you are:



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post #2 of 22 (permalink) Old 03-01-2018, 12:53 PM
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Originally Posted by Brock View Post
We've had requests for a dyno comparison between these two bikes, so here you are:



Brock
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Good comparison. I'd be pleased to own either.

Last edited by skapan; 03-01-2018 at 01:05 PM.
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post #3 of 22 (permalink) Old 03-01-2018, 01:11 PM
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Originally Posted by Brock View Post
We've had requests for a dyno comparison between these two bikes, so here you are:



Brock
www.BrocksPerformance.com
What's with that weird glitch on the BMW at 11,500rpm-ish? That can't be right, it's too violent a change in the curve.

Making America Great Again, one melted snowflake at a time......

"Madness": 2015 Motorrad S1000RR with the DDC and "Forgies".
'01 Suzuki Gixxer 1k Blu/Wht (Sold - 79k miles).
'91 Kawasaki KX500 (Still got it).
'86 Suzuki Gixxer 1100 Blu/Wht (Sold - 68k miles).
'83 Suzuki GS1100ES Red/Blk (Sold - 60k miles).
'82 Yamaha 650 Maxim (Sold - 50k miles).

"Hangin's too good for 'im.....BURNIN'S too good for 'im.......he should be torn into little-bitsy pieces and BURIED ALIVE!"
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post #4 of 22 (permalink) Old 03-01-2018, 01:17 PM
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That's the velocity stack switch over point.

I'm guessing it's not changeable in the ECU / or there's no smoothing that can be done by moving it. It's like that in everybody's flash as well.
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post #5 of 22 (permalink) Old 03-01-2018, 02:21 PM
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That's the velocity stack switch over point.

I'm guessing it's not changeable in the ECU / or there's no smoothing that can be done by moving it. It's like that in everybody's flash as well.
It could switch at that point, but I'm still not buying the shape of the curve there, it's almost vertical at one point, which is impossible. That, plus there was never that kind of result in any of the previous BMW curves I've ever seen. In fact, I've NEVER seen that in any dyno graph I've ever seen.

Something ain't right....
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Making America Great Again, one melted snowflake at a time......

"Madness": 2015 Motorrad S1000RR with the DDC and "Forgies".
'01 Suzuki Gixxer 1k Blu/Wht (Sold - 79k miles).
'91 Kawasaki KX500 (Still got it).
'86 Suzuki Gixxer 1100 Blu/Wht (Sold - 68k miles).
'83 Suzuki GS1100ES Red/Blk (Sold - 60k miles).
'82 Yamaha 650 Maxim (Sold - 50k miles).

"Hangin's too good for 'im.....BURNIN'S too good for 'im.......he should be torn into little-bitsy pieces and BURIED ALIVE!"
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post #6 of 22 (permalink) Old 03-01-2018, 02:38 PM
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Brock can you answer me this.


The gsxr is with 100% open throttle blades all they way right, since you are able to go into the ecu / ecm and change it.
While the s1000rr is on that funky stuff, and only open 80% at the upper range right, because nobody is able to access the ecu at the moment.

So to say its a back to back comparison is unfair in my opinion.

Would be interesting to add a rck3 to it, and modify it so the throttle blades stay open all the way.
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post #7 of 22 (permalink) Old 03-01-2018, 02:41 PM
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Do you have a base run for the RR before the mods?
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post #8 of 22 (permalink) Old 03-01-2018, 02:51 PM
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Originally Posted by CYCLE_MONKEY View Post
It could switch at that point, but I'm still not buying the shape of the curve there, it's almost vertical at one point, which is impossible. That, plus there was never that kind of result in any of the previous BMW curves I've ever seen. In fact, I've NEVER seen that in any dyno graph I've ever seen.

Something ain't right....
It's there in nearly all of them that haven't been heavily smoothed. You've been looking at graphs that have been made to look pretty and sacrificed accuracy.

You can feel it on the bikes as well. It's why the thing seems to leap off at 12k RPM, because it dropped acceleration right at 11k.





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post #9 of 22 (permalink) Old 03-01-2018, 03:27 PM
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It's there in nearly all of them that haven't been heavily smoothed. You've been looking at graphs that have been made to look pretty and sacrificed accuracy.

You can feel it on the bikes as well. It's why the thing seems to leap off at 12k RPM, because it dropped acceleration right at 11k.





"Smoothed"? Are you saying they somehow manipulated the data?

I've seen slight dips before, like in these charts you listed, but that violent vertical drop and the shape doesn't look anywhere near close to accurate. Still ain't buying it.

Of note, a "Dynojet" is not a true dynamometer, it's an accelerometer.

Making America Great Again, one melted snowflake at a time......

"Madness": 2015 Motorrad S1000RR with the DDC and "Forgies".
'01 Suzuki Gixxer 1k Blu/Wht (Sold - 79k miles).
'91 Kawasaki KX500 (Still got it).
'86 Suzuki Gixxer 1100 Blu/Wht (Sold - 68k miles).
'83 Suzuki GS1100ES Red/Blk (Sold - 60k miles).
'82 Yamaha 650 Maxim (Sold - 50k miles).

"Hangin's too good for 'im.....BURNIN'S too good for 'im.......he should be torn into little-bitsy pieces and BURIED ALIVE!"
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post #10 of 22 (permalink) Old 03-01-2018, 03:43 PM
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Originally Posted by CYCLE_MONKEY View Post
"Smoothed"? Are you saying they somehow manipulated the data?

I've seen slight dips before, like in these charts you listed, but that violent vertical drop and the shape doesn't look anywhere near close to accurate. Still ain't buying it.

Of note, a "Dynojet" is not a true dynamometer, it's an accelerometer.
Smoothing, correcting factor, etc, yes. All dyno charts are manipulated to some degree. I'm not a tech, so I can't really speak to this much more than my basic understanding. Brock would be the guy to step in and explain this in more detail

You don't personally have to buy it for it to still be true, but it is the reality of the engine/airbox design at the moment.

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