K&N high flow Air filter

[becky]

if i got one of these fitted to my bike would i need to get anything done to it. would i need to get it remapped or what ever it is.....:grin1

[harriebird]

might be worth getting it tweaked a little if you didnt get anything done after you fitted your race can?

but i dont think you absolutely have to....

[Jetski]

I had a standard filter on my track bike. When it had the bogging problems it went on the dyno. Whilst they were there they tried the k&n out of my road bike in it and it actually made it run slightly worse.

We're pretty sure now also, that the k&n in the road bike isn't actually helping matters because it wansn't jetted to suit it when it was fitted.

I'm told that some bikes you can put them straight on (more or less) and its fine, but others need jetting for it to get the best benefit.

I'm sure someone with a less muddled brain can give you a more precise answer :grin2

[harriebird]

and what a lovely girlie chat about air filters this is :skip

:cuddle

[kasandrich]

Carry on Girls you don't need any help from blokes you have got it all covered, well done. Its heart warming to see Girlies talking such stuff, and I must add talking perfect sense.

[Lateshift]

you have a fuel injected bike Becky, the air flow meter and ECU will adjust the fuelling for you, dont worry about it ;) (jetting is only needed on bikes that have carbs instead of injection ;) )

however its long been known though (although more where Kawasaki are concerned) that K&N filters dont work any better than any of your OEM factory parts these days, they just dont filter the crap out as much ;)

I would be surprised if you got any noticeable gain in performance, maybe a slightly more responsive throttle and very likely some better induction noise :)

[Jetski]

you have a fuel injected bike Becky, the air flow meter and ECU will adjust the fuelling for you, dont worry about it ;) (jetting is only needed on bikes that have carbs instead of injection ;) )


Yes yes, minor technicality :grin2

But I'm still right...

Someone with a less muddled brain did give you a more precise answer :grin2

[becky]

hee hee thanks guys and girls. i think il prob get one. just to see if it is a bit more responsive.

[MickyGixer]

I had the K&N whacked in the Gixer on its last service and it breaths like a dream, and makes a difference in my opinion no adjustment whatsoever.....as Latey pointed out the fuel injection set up 'should' do it for you.:laugh1 :jumping2 :laugh1 :jumping2 :rockon

[Jetski]

as Latey pointed out the fuel injection set up 'should' do it for you.:laugh1 :jumping2 :laugh1 :jumping2 :rockon

Oh to be able to bathe in the luxury of owning a bike new enough to benefit from this 'fuelle injectionatum'

:grin2

[Lateshift]

The general rule of thumb is that if you are going to increase induction, you need to increase exhaust, you already have a race can on their so it makes sense to allow the engine to breathe properly to begin with too :)

Every bike is different, so dont expect massive horsepower increases, but it 'should' feel more responsive as mentioned.

But have a look around some of the R6 forums to see what they reckon is the best after market air filter, i know on the ZX9R, the Kawsaki standard filter performed better, i know it was supposedly the same with the Yamaha R1 in 98 too ;)

If anything the induction howl is worth the beer tokens spent on the air filter :D

[MickyGixer]

Oh to be able to bathe in the luxury of owning a bike new enough to benefit from this 'fuelle injectionatum'

:grin2

Awww hun your time will come......:jumping2 :laugh1 :jumping2 :laugh1 :jumping2

[two]

the ECU will adjust the fuelling for you
thats a biking myth

heres the reasoning....
Fuel injection systems work by reading information from several sensors, then use this data to look up reference values created by the manufacture. From this, the ECU arrives at a time value - that's how long it needs to open the injector to deliver the right amount of fuel. The sensors normally measure things like air temperature, revs, throttle position and coolant temperature. So if the engine is cold it may deliver more fuel than if it's hot. Likewise, if the throttle is wide open it'll deliver more fuel than when it's shut. So, in one sense, a fuel injection system is capable of making changes to compensate for other variables.

However, this information is largely pre-programmed into the ECU. This means that the system thinks it's fuelling a bike of a particular capacity, with a certain exhaust system, specific injectors, air filter, air box and so on. If you change any one of the hardware components you will change the required feeling. So by fitting a full race system you will let the engine breathe more freely. But the ECU doesn't know this and continues to fuel as if the bike was in standard tune - 9 out of 10 times making the bike run lean.

The exception to this is a closed-loop system. This fuel injection system has a lambda sensor in the exhaust which reads the air/fuel ratio and tells the ECU what it is. If the ECU knows what figure to aim for (14.3 from memory) then it can adjust the fuelling. If the engine is running lean - because you've fitted that pipe and air filter - it knows and compensates as its measuring the exhaust gases. Very few bikes have closed loop systems, those that do tend to use them for fuel efficiency. (honda vtec vfrs for example)

This is where a Dynojet Power Commander comes in. Remap the bike to suit the current state of tune and get the correct ratio throughout the rev range (by adjusting the time value for the injectors as required)

i've got a k&n and akky can and very slightly modified air box (thinking about doing the zx6r kleen air mod)...
i've not bothered with a power commander...my bike runs lean throughout the rev range as a result, but not enough to do any damage so i've been told by the 'dyno bloke' when going over the printout
so me riding with a baffle in puts my air/fuel ratio closer to the ideal ratio

a power commander would make little difference to my peak bhp ... but it would do wonders with the exhaust gases ratio and flatten out my torque curve (and of course fix the flat spot all manufactures build into bike to pass the emissions test) and therefore improve throttle responses

if i had a full race system instead of just a end can then i would fit a power commander straight away, as the mixture would be so lean it could/would damage the engine.. but just an end can and filter..? there are benefits, but not enough for road riding

as already mentioned, oem filter flow extremely well, some are even cleanable... if your isn't cleanable, I'd get a performance filter just for that reason alone (and of course a performance air filter sticker to put on the bike somewhere)

so in summary...








check on the r6 site ;)

they'll give you advice based on experiences with your particular model

[Lateshift]

Well within reason ;)

Obviously the ECU does adjustments based on set parameters and doesnt fine tune the mixtures precisely, if X is % and Y is % then XY= +/-%

I think that makes sense? :D

Granted if you were to go the whole hog and fit a race system then a power commander on an injected bike is the ultimate answer as far as keeping within a sensible budget but its not always essential, i certainly wouldnt need to run one on the RSVR as the ECU is capable of controlling the emissions well enough and the existing system is known to be just as good as an aftermarket one (until you start to spend over £1600 :eek: )

But a power commander in essence is a stand alone fuel management system and fine tunes fueling and ignition timing (on the later ones) and pretty much takes care of the small percentages that the ECU tries to deliver generically.

:)

[harriebird]

and on a less techy note :grin2 aren't K&Ns meant to last a million times longer than a standard filter?

[Lateshift]

The reason they last longer H is because they are a coarser material (to allow more air through) and are "cleanable", if OEM filters werent made of paper and could be cleaned they would last just the same to be honest :)

But as with anything especially where service schedules are concerned the air filter are designed to be throw away as it not only saves time but costs money :D