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#Post#: 75--------------------------------------------------
Air intake vacuum valve
DIR By: Max Headroom
Date: August 11, 2017, 10:09 am
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Hi all,
Just removed the air box and installed individual K&N filters.
Can I now disconnect and remove all the stuff which controls the
valve i.e. solenoid valve, surge tank etc?
Cheers
Max
#Post#: 76--------------------------------------------------
Re: Air intake vacuum valve
DIR By: omeo-mt01
Date: August 12, 2017, 3:51 am
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--- Quote from: Max Headroom link ---
>
> Hi all,
> Just removed the air box and installed individual K&N filters.
Can I now disconnect and remove all the stuff which controls the
valve i.e. solenoid valve, surge tank etc?
> Cheers
> Max
>
--- End Quote ---
Gidday Max, thank christ someones using the forum.
Basically, yes.
When you get in and look at it, its pretty clear. Dont touch the
ISC.
cheers
#Post#: 77--------------------------------------------------
Re: Air intake vacuum valve
DIR By: mr.bogan
Date: August 12, 2017, 10:53 pm
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ok max what's it like, what deference's if any did you notice,
iam thinking of doing the same cheers
#Post#: 78--------------------------------------------------
Re: Air intake vacuum valve
DIR By: Max Headroom
Date: August 14, 2017, 3:22 am
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Omeo, thanks for getting back to me, I thought as much but just
wanted to be sure there wasn't something else linked in.
Bogan, as for how it runs; I don't know yet as the bike is still
in pieces with all the other mods I'm doing but I'm not
expecting any real performance increase it will just work better
with my new air scoop.
As for posting on the forum we really need to contribute rather
than just reading other posts if we want this site to survive
(I'm just as guilty as everyone else). Before Laz quit I think
the site was only kept going by posts from our friends down
under. Actions being louder than words I'll start a build thread
on my bike today, hopefully someone finds it interesting.
Cheers
Max
#Post#: 79--------------------------------------------------
Re: Air intake vacuum valve
DIR By: omeo-mt01
Date: August 14, 2017, 5:50 am
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--- Quote from: Max Headroom link ---
>
> Omeo, thanks for getting back to me, I thought as much but
just wanted to be sure there wasn't something else linked in.
>
> Bogan, as for how it runs; I don't know yet as the bike is
still in pieces with all the other mods I'm doing but I'm not
expecting any real performance increase it will just work better
with my new air scoop.
>
> As for posting on the forum we really need to contribute
rather than just reading other posts if we want this site to
survive (I'm just as guilty as everyone else). Before Laz quit I
think the site was only kept going by posts from our friends
down under. Actions being louder than words I'll start a build
thread on my bike today, hopefully someone finds it interesting.
>
> Cheers
>
> Absolutely, love to see it.
> I came across the dealer advice PDF of the stage 2 and 3
yesterday. I'll make it available online later in the week. It
includes the removal of those items.
> Must take a pic or two of the re-polishing of the swingarm on
mine. More importantly about the perils of trying to protect
your polishing with a clear coat of 2 pack. This is a RE polish,
note.
>
> Max
>
--- End Quote ---
#Post#: 207--------------------------------------------------
Re: Air intake vacuum valve
DIR By: Rocker
Date: January 13, 2018, 4:24 am
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Removing the air valve is a great mod and if I remember rightly
(I don't always) :(
Take the valve and other parts off link the the stubs on the
throttle bodies together with a pipe. start warm up and reset
the idle then you will need to reset the tps position and vola.
A small fixed throttle input is needed to start from cold.
don.t set the tick over too high or low the engine managment
light wil come on ;)
#Post#: 208--------------------------------------------------
Re: Air intake vacuum valve
DIR By: gorilla
Date: January 14, 2018, 3:58 am
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Looking forward to pictures of this mod.
#Post#: 225--------------------------------------------------
Re: Air intake vacuum valve
DIR By: armando
Date: January 24, 2018, 3:15 am
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--- Quote from: Max Headroom link ---
>
> Hi all,
>
> Just removed the air box and installed individual K&N filters.
Can I now disconnect and remove all the stuff which controls the
valve i.e. solenoid valve, surge tank etc?
>
> Cheers
>
> Max
>
--- End Quote ---
Hi all!
Just for your info...
I also installed K&N last year and was surprised at the light
transmittance of the filter which made me a little cautious.
I found this K&N filter review couple weeks ago:
HTML http://www.nicoclub.com/archives/kn-vs-oem-filter.html
Now I am going back to OEM.
I hope the info will be useful.
Armando
#Post#: 227--------------------------------------------------
Re: Air intake vacuum valve
DIR By: Max Headroom
Date: January 25, 2018, 6:11 am
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Hi Armando,
Great to have someone new commenting.
I read through the article a couple of times and I feel there
are 3 salient points missing. First is they do not give the
surface area of each filter, secondly they do not say how much
surface area was presented to flow and were all the filters the
same shape?
The first point is obvious surface area is all important in a
calculation/test like this. The second point is equally
important, if one filter was flat to flow it's going to have
different flow characteristics to an oval/conical shape filter.
The area at the back of an oval filter will be in an eddy -
turbulent area. Again the shape of the filter greatly affects
flow through it. In my view this kind of makes the tests
meaningless.
One point is true though; when it comes to a filter with an oil
film it has the potential to clog faster than a plain paper
filter. The dirt will coagulate with the oil and block the
filter, hence the need to clean oil film filters more regularly
than paper.
As for claims your engine and system are set up for max
performance, we all know this is not true. They're set up to
pass very strict emissions tests. Take for example, I was once
looking to take my 6 month old BMW bike to the US with me as I
was planning to be there a number of years. After talking with
BMW at both ends, I had to jack the idea due to the incredible
emissions standards required. The bike in the US was strangled
compared to the EU model! The harder the emission standards the
more power you loose. Removing all the emissions crap will
always improve power so long as it's suitably re-tuned.
I think most will agree best performance will be seen with the
bike set up correctly to run with an open Velocity Stack however
there's a lot of tuning for our bike to run in that format i.e.
Stage 3 level.
When I chose to do the K&N swap I took into account the
generally held view that the MT-01 runs rich and I chose a
filter with a comparable flow area to that in the standard box,
although flow around it is entirely different. To be honest I'm
not expecting a big gain in power I just didn't have the heart
to put that big heap of plastic back in the bike, weight alone
must give me a second on the 0-60 :))
Cheers
Max
#Post#: 231--------------------------------------------------
Re: Air intake vacuum valve
DIR By: Danmt
Date: January 25, 2018, 1:13 pm
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I have a KN filter in my stock -05 but I am considering
installing a factory filter this winter. The reason is that an
injected and lambda controlled engine only runs in closed loop
at more or less constant power settings. When accelerating the
fuel is injected acc to the fuelling map based on speed,
throttle postion etc. If you install a less restrictive air
filter without doing anything else the bike may be a bit lean
during acceleration and not as powerful as it should be. At
constant power the KN filter may improve fuel consumption
marginally.
That's the theory anyway. It will be interesting to see if
reality is in accordance.
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