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2021 Yamaha MT-09 SP
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Discussion Starter · #1 · (Edited)
Hey guys, I had my bike up at 2wheeldynoworks in Kirkland, WA specifically to get the ECU flashed.

They also installed my Akrapovic Carbon exhaust as well as the DNA Stage 2 Air filter.

I only picked up the bike up a few hours ago but, oh my gosh it's an entirely different bike now.

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It's so smooth, and it just wants to pull even harder than it did before! The engine braking was smoothed out as well so when I'm off throttle it doesn't throw me forward. I'll keep you all updated when I get some more time on the bike. But, so far so good!

2wheel has more information on their site for the '21 ECU flashing service

And Links:
DNA stage 2 Air Filter
Akrapovic Racing Line (Carbon)

Also, if you are curious about the "Airbox" Mod for the 2021's feel free to message me. It was tried and... yeah

Edit : Here are the other comparison charts


Slope Rectangle Font Plot Parallel

Rectangle Slope Font Plot Parallel

Rectangle Slope Font Plot Parallel
 

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Yamaha MT 09 SP 2021
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Nice.
So the 21 model doesn't have the gains that the older one had.Too bad...
At least I'm happy to see that the loss of torque at 10000+ rpms is gone.
I guess the throttle at low rpms will be improved too.
 

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I agree my 21 09SP has responded well to the tuning & can feel that extra torque everywhere compared to STD Yamaha Tune, the 5000 to 7000rpm range feels so much better, I see they extended your rev limiter as well.
 

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I would be interested to see a Dyno with just exhaust, don't know if there is much restriction in the intake ... 🙂
i will have one soon, im finished doing the street data logging for the part throttle tuning and just have to clean up a little on the dyno, should be done stock exhaust by end of the weekend. Then ill be putting on the akro exhaust and im not doing to DNA lid at this point. I have an arrow system coming to test also.
 

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Discussion Starter · #9 ·
looks good, im surprised how little it responded to the new exhaust
Yeah, the exhaust seemed to barely matter except for at the top range. It looks like the intake the real restriction on this model year. Like, super restricted.

Which good news to everyone buying exhausts! Just get the one you like looking at and hearing! Because, the intake is so restricted the pipe isn't the issue!
 

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Discussion Starter · #10 ·
i will have one soon, im finished doing the street data logging for the part throttle tuning and just have to clean up a little on the dyno, should be done stock exhaust by end of the weekend. Then ill be putting on the akro exhaust and im not doing to DNA lid at this point. I have an arrow system coming to test also.
I can't wait to see what you're able to do but, I think the intake is going to be the limiting factor.
 

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We could also see some gains from a change of stack lengths, also need some back to back runs with the snorkels trimmed & removed.
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Thanks for the detailed charts and info!

I was mostly interested in the stock tune vs flashed tune with no other mods, and came out a bit disappointed. One would think with bigger displacement and Euro 5 that there were some intentional electronic bottlenecks to keep the bike compliant, but doesn't appear there's much to be had. Maybe vcyclenut's tune will net some better results when his is ready?
 

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Discussion Starter · #14 ·
We could also see some gains from a change of stack lengths, also need some back to back runs with the snorkels trimmed & removed. View attachment 168061

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Thanks for the detailed charts and info!

I was mostly interested in the stock tune vs flashed tune with no other mods, and came out a bit disappointed. One would think with bigger displacement and Euro 5 that there were some intentional electronic bottlenecks to keep the bike compliant, but doesn't appear there's much to be had. Maybe vcyclenut's tune will net some better results when his is ready?
Well, the larger displacement was in the engine stroke and not the bore, so this new bike will make more torque. And I wouldn't get too tied up in the max hp and torque numbers. Everything else they did transformed the bike and increased the rideability.
 

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Thanks for the detailed charts and info!

I was mostly interested in the stock tune vs flashed tune with no other mods, and came out a bit disappointed. One would think with bigger displacement and Euro 5 that there were some intentional electronic bottlenecks to keep the bike compliant, but doesn't appear there's much to be had. Maybe vcyclenut's tune will net some better results when his is ready?

I did :)

2021 MT09 Akrapovic testing - FLASHED BY VCYCLENUT
 
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