[fred1962]

These small devices making it work.

 

[psycoreefer]

@fred1962 - on your dyno chart - was there a change in the ECU tune between those two runs, or only in the install of the stacks? at what RPM do the stacks 'extend' - i'd sort of expect to see a blip/step on they dyno chart at that point....right?

 

[fred1962]

@fred1962 - on your dyno chart - was there a change in the ECU tune between those two runs, or only in the install of the stacks? at what RPM do the stacks 'extend' - i'd sort of expect to see a blip/step on they dyno chart at that point....right?

After mounting the stacks( without changing the ecu) there was a little bit improvement, but the fuel was standing to rich, so we did a few runs more with some changes on the ecu and that improved a lot.
The stack come up around 7500/8000 rpm or so, driving the bike afterwards was amazing to feel it on the gas

 

[VPMotorsport]

What about the wiring of the new stacks? How are they now connected to the stock cables and how it has been modified (still possible to return to stock cables?)?

Hey Marco,

The wiring of the stacks connects to the OEM cables on your bike with a electrical smart connector which can be removed anytime. Its possible to return to stock afer mounting the variable stacks assembly with eas. (The stacks arent connected to the throttle cables.)
The stacks can also be transfered to a new MT09 (tracer) with the CP3 engine.

 

[chdrummerdude]

Do these fit the gen4 MT09? I've been very curious about these. I'm in the US so it would be cool to get one of these in to test.

 

[fred1962]

Do these fit the gen4 MT09? I've been very curious about these. I'm in the US so it would be cool to get one of these in to test.

If your airfilter box is the same as the first and second gen so it wil fit( and work) I am the second one with the cp3 engine who installed it, ( first on a tracer and my mt 09 from 2017 second gen.
You can look at the graph and see the difference.
It only needs a proper flash on a dyno( for the best result), only a flash will work to , just not optimal.
I am living in Danmark, so geographical it don’t have influence I think 🤔

 

[chdrummerdude]

If your airfilter box is the same as the first and second gen so it wil fit( and work) I am the second one with the cp3 engine who installed it, ( first on a tracer and my mt 09 from 2017 second gen.
You can look at the graph and see the difference.
It only needs a proper flash on a dyno( for the best result), only a flash will work to , just not optimal.
I am living in Danmark, so geographical it don’t have influence I think 🤔

4th gen is different.

 

[fred1962]

4th gen is different.

Don’t know how it looks, but if the distance and diameter between the stacks is the same as the older models there is no problem I think.

 

[VPMotorsport]

Hey @chdrummerdude

This version of the stacks will only fit the Yamaha MT-09 from 2014 until 2020. Starting in 2021, Yamaha introduced a new airbox, so these stacks are not compatible with models from 2021 to 2024.

The same applies to the Tracer version—the stacks will fit the Tracer from 2015 until 2020.

We are currently working on a version of the variable stacks that will fit the MT-09 from 2021 to 2024.(The same goes for the tracer) We’ll keep you updated once the new version is released.

Overview of Compatibility:

Motorcycle Model	Years	Compatibility
Yamaha MT-09	2014 - 2020	Fits
Yamaha MT-09	2021 - 2024	Not compatible (new version in development)
Yamaha MT-09 Tracer	2015 - 2020	Fits
Yamaha MT-09 Tracer	2021-2024	Not compatible (new version in development)
Yamaha XSR900	2016-2021	Fits
Yamaha XSR900 (XSR900GP)	2023-2024	Not compatible (new version in development)

 

[fred1962]

Hey @chdrummerdude

This version of the stacks will only fit the Yamaha MT-09 from 2014 until 2020. Starting in 2021, Yamaha introduced a new airbox, so these stacks are not compatible with models from 2021 to 2024.

The same applies to the Tracer version—the stacks will fit the Tracer from 2015 until 2020.

We are currently working on a version of the variable stacks that will fit the MT-09 from 2021 to 2024.(The same goes for the tracer) We’ll keep you updated once the new version is released.

Overview of Compatibility:

Motorcycle Model	Years	Compatibility
Yamaha MT-09	2014 - 2020	Fits
Yamaha MT-09	2021 - 2024	Not compatible (new version in development)
Yamaha MT-09 Tracer	2015 - 2020	Fits
Yamaha MT-09 Tracer	2021-2024	Not compatible (new version in development)
Yamaha XSR900	2016-2021	Fits
Yamaha XSR900 (XSR900GP)	2023-2024	Not compatible (new version in development)

Bad luck for you, must buy a older model😁

 

[psycoreefer]

I kinda hate to say it....but you gained what - 4HP, with the stacks AND a flash - how confident are you that the new flash isn't just slightly better than the one you had before? Its cool I suppose if you're chasing every last little bit of performance for a track bike - but if I'm gonna spend $1300 I'd sort of expect a bigger gain than that - the first post was claiming 13ish HP.......

 

[fred1962]

I kinda hate to say it....but you gained what - 4HP, with the stacks AND a flash - how confident are you that the new flash isn't just slightly better than the one you had before? Its cool I suppose if you're chasing every last little bit of performance for a track bike - but if I'm gonna spend $1300 I'd sort of expect a bigger gain than that - the first post was claiming 13ish HP.......

Ok you’re in a doubt I can imagine.
I like to spent my money on something that works, and proven to do that.
The 13 hp that claimed is comparing a standard bike with no flash, with a bike with the stacks on it.
so maybe 5hp more for your first flash is worth the money? 400$ or so?
A new Akra maybe for 1200€ or so?
Race filter 200€, and than saying that 1300$ is suddenly to much?
It’s still a hobby for some of us to try to get the most out of a engine, and yes 4 hp and 4 nm is quite a lot comparing my bike with a lot of mt 09er that’s been flashing with woolich software.
Look around and name 10 or more cp3 engines with something that comes near, I can’t fint them, even when I’m looking in the databases of 3 tuner companies who flashes with American Woolwich software, I can’t find a single one.
But anyway again the bike drives like hell and a pity for the unbelievers that they can’t try it out.
I am very very happy with it and can just say it with one word.
Fantastic.😁😁😁

 

[SLM13]

I had the chance to try out Fred's (amazing) bike in May when we were in Sardinia (fantastic roads, by the way...). We swap bikes: my Gen 1 has a good flash from an Italian well known tuner (stock exhaust and filter, stock gear ratio)... I was very impressed of how Fred's bike (Gen 2 Akra+filter+flash+stock gear ratio) has much more pull in every situation... Beside all the weight savings and the carbon wheels, it looked to me having a lot more power/torque from the engine along with a very good flash, so I was very curious to take a look to the comparison graph before/after the variable stack mod, just because I knew what that "lower" power/torque curve is about.
I can imagine having that extra power/torque on top of the previous one!
I'm looking forward to do another swap next year, back in Sardinia

 

[psycoreefer]

I said its cool if it is 'your thing' and I'm glad you're happy with the results. I'd say the biggest difference with all the other things you list is that all those things have benefits besides pure HP increase:

Flash - I did this mostly to get the re-mapped ride modes and smooth out the on-off throttle transition - if I picked up a little power it was only a nice side benefit
Exhaust - hated how the stock exhaust looked and sounded, doubt I picked up any power with it, did loose like 15lbs of cat weight though so that is nice
Filter - Mainly I went with the 'race' filter because it is washable - I'll never have to buy another filter again as long as I own the bike - also doubt it added any power....but maybe.

I guess I'm just a little disapointed that the increase isn't bigger.

 

[ErikvI]

Hi FZ09 Forum,

First of all, let me briefly introduce myself. My name is Erik and I am currently driving a Tenere World Rally.
I am also a customer of VP Motorsport, I live nearby and occasionally come for a cup of coffee.
Long story short; I knew that VP Motorsport was working on variable intake stacks for their Aprillia RS660 racer. Later I heard that they were also developing these stacks for the Yamaha CP3 motorized models.

After seeing the results on the Dyno of the Aprillia RS660, my question was, is this perhaps also possible to develop these stacks for the CP2 engine?

Wilko's answer was that this would be a nice idea, but that the emphasis is currently on the CP3 engine.
However, I was able to take the opportunity to feel the immediate difference between a completely standard MT09 Tracer '16 (only the fuel cut-off was turned off) and an MT09 Tracer '17 with full Akra system, ECU flash and the VP Motorsport Variable Inlet Stacks. These test rides coincidentally took place the same day when the airbox of Fred's MT09 was modified for the Variable Stacks, very nice bike btw Fred and nice to meet you!

Anyway, the difference in throttle response, but especially the smooth delivery of a whole lot of torque from 4000 rpm and the fast acceleration to the redline, was a night and day difference between these two bikes.
In my opinion, the standard MT09 Tracer felt a bit dull in the mid range and it takes a while before there is some kind of final shot.

The modified MT09 Tracer, on the other hand, has addictive bottom-end torque, very controllable and an impressive end shot. Front wheel lift is super controllable, much better than the standard version.

Of course, for me this is a "seat of the pants" impression but believe me, blindfolded most people will not believe that this is the same engine. It feels as if the front sprocket has a tooth less, but with much more controllable torque.

I hope that this modification will also come soon for the CP2 engine, it would be great to give the Tenere 700 (or the MT07/R7!) some extra features.
I will keep an eye on this topic and as soon as the CP2 comes up I would like to make my World Rally available for development!

Of course this all sounds like an advertisement for the VP Motorsport Variable Stacks (and ultimately it is) but if I had experienced little or no difference between the two bikes I would not have written this story anyway.


Grtz. Erik

 

[VPMotorsport]

Hey psycoreefer,

When a new product is being launched its always good to be skeptical.
But the thing about variable intake stacks is that they have been proven to work on mutiple bikes. (Aprilia mounts them from factory.)

Fred's MT09 was already a really well tuned and a fast bike when we first got it. (Checked the mapping before hand)
We got a 4NM and 5 HP increase out of a already fast bike with mounting the stacks. (The 12HP claim was about torque not HP, we got a 12NM increase on that specific tracer)

The stacks mainly change the throttle response, making it more aggresive in every part of the power band. (The line of the HP and torque is higher in almost every part of the run)
A dyno graph wont conveigh the feeling you get on the throttle with the stacks mounted. The air pulses in the airbox are now optimized in every situation giving you a different feeling. So the real fun is not at the peak power, but in the lower RPM's.

If ur looking for pure HP increase on a N/A bike turbo'ing it is the best option.

A new exhaust combined with a filter will increase your HP and torque, because they let the bike inhale and exhale better. (And then again only with a tune.)

We would like to invite you and try it and find out for yourself, but we know its not geographically possible.

Take a look at this video if ur wondering how variable intake works. Variable Intake & Intake Tuning

 

[JCFZ9]

But the thing about variable intake stacks is that they have been proven to work on mutiple bikes. (Aprilia mounts them from factory.)

Yamaha as well, variable stacks have been used on R1's and R6's for years now.

Which brings me to my question - have you tested the variable stacks on a CP3 that was otherwise completely stock (stock airbox/filter, exhaust, etc.)? Curious to see what Yamaha 'left on the table' by using fixed length stacks instead of variable ones.

 

[VPMotorsport]

Hi JCRZ9,
We know the list is much longer than mentioned.
See other replays on this post , we explained it many times.
Yes we think Yamaha left some things 'on the table" for those how wanted some improvements, on the other hand the CP3 engine is beautiful enginered and is the right engine on the right place.

Wilco&Sascha Visser
VPMotorsport
Netherland

 

[psycoreefer]

Hey psycoreefer,

When a new product is being launched its always good to be skeptical.
But the thing about variable intake stacks is that they have been proven to work on mutiple bikes. (Aprilia mounts them from factory.)

Fred's MT09 was already a really well tuned and a fast bike when we first got it. (Checked the mapping before hand)
We got a 4NM and 5 HP increase out of a already fast bike with mounting the stacks. (The 12HP claim was about torque not HP, we got a 12NM increase on that specific tracer)

The stacks mainly change the throttle response, making it more aggresive in every part of the power band. (The line of the HP and torque is higher in almost every part of the run)
A dyno graph wont conveigh the feeling you get on the throttle with the stacks mounted. The air pulses in the airbox are now optimized in every situation giving you a different feeling. So the real fun is not at the peak power, but in the lower RPM's.

If ur looking for pure HP increase on a N/A bike turbo'ing it is the best option.

A new exhaust combined with a filter will increase your HP and torque, because they let the bike inhale and exhale better. (And then again only with a tune.)

We would like to invite you and try it and find out for yourself, but we know its not geographically possible.

Take a look at this video if ur wondering how variable intake works. Variable Intake & Intake Tuning

I'm not doubting the variable intake stacks work - as you pointed out OEM's have been putting them on stuff for a long time (and not just bikes) - plenty of cars have a variable length intake too. I was just excited and now I'm a little bummed that the power increase isn't that big.

 

[marcobmwf800gs]

It would be interesting to see a Dyno of a remapped 09 with stock air box and the same bike after the variable stacks...the remap itself pull out a lot of torque on low-mid rpm already...so what's the real gain (torque) on a mapped 09 by adding the variable stacks? That would be interesting...