Air box setup for the Mille

[Toastrider]

I was told the topend power was limited by the valves

But it has the biggest effect on the midrange power

[Micah / AF1 Racing]

You can datalog your MAP sensor to see what your high speed air density is...some very interesting stuff to be learned there if you do it. Technically the stock MAP sensor is 1 bar or 0-14.7 psig but they are usually good to about 15-16 psi Total air pressure, if need more resolution then you can easily add a second 1.5 BAR map sensor and log it. Air temp inside the airbox near the intake trumpets is also interesting to look at, in traffic and on a hot day MUCH higher than you might expect.

[Toastrider]

I would like to add with both the evo & the Renegade kit
It has the benefit of air cooling the fuel as it is hitting the underside of the tank!

[Toastrider]

So what kit do you think is better Micah?

The Open renegade or Sealed Evo kit?

Just curious

[FTM]

There is an old thread somewhere on the Gen 1 Tuono section that shows a power gain of about 2hp by changing the Aprilia airducts for simple 90 degree rubber tubes pushed into the frame. The Aprilia airducts must be causing turbulance in the airbox.

[FTM]

I have noticed on some of the renegade type air intakes the filter hits the underside of the tank so I'd guess about 20% of the available surface of the filter is lost.

[kzmille]

I would like to add with both the evo & the Renegade kit
It has the benefit of air cooling the fuel as it is hitting the underside of the tank!

If the air is cooling the fuel, isn't the fuel heating the air?

[Micah / AF1 Racing]

I guess it might have been missed earlier, the best all around airbox for my Gen1's was in both instances the stock airbox and filter with a 1999 spec intake boot attached to bottom of airbox. The best airbox for the Gen2 I help with as a track bike...stock airbox and filter.

The best airbox I ever tested on my Gen1 was the MSS for true gains, nothing up top, a small loss actually but substantial midrange gains. It was a pain int he ass to take on and off though so back to stock I went.

I would never use a Renegade style pod kit on any modern bike, the entire line of thinking that a flat plate with a big foam pod filter over the top of it is going to beat the R&D of any Japanese or European factory is somewhat misguided.

[Toastrider]

I guess it might have been missed earlier, the best all around airbox for my Gen1's was in both instances the stock airbox and filter with a 1999 spec intake boot attached to bottom of airbox. The best airbox for the Gen2 I help with as a track bike...stock airbox and filter.

The best airbox I ever tested on my Gen1 was the MSS for true gains, nothing up top, a small loss actually but substantial midrange gains. It was a pain int he ass to take on and off though so back to stock I went.

I would never use a Renegade style pod kit on any modern bike, the entire line of thinking that a flat plate with a big foam pod filter over the top of it is going to beat the R&D of any Japanese or European factory is somewhat misguided.

I guess the factory have to abide to noise regs etc.
Was the stock box on a stock bike?

I ask because I refitted my stck air box and I lost lots of midrange ?
I have a Gabro chip and Dual link collector

So it makes sense the bike requires more air

[Toastrider]

What's the issue with a pod filter over the stacks
As opposed to standard location

[planter87]

If your worried about heating your fuel, cover the bottom of the tank in reflective alloy tape. Not to stir the pot even more but arent these bikes quick enough? The right gearing is bound to make your motor feel quicker than spending all kinds of money on air boxes. Carbon mss is nice for bling factor, I made my own evo style out of a spare air box lid and some heavy neoprene rubber for a gasket, it's cheap , nasty and crude but it worked, noisy as heck when you wind it open low down but never dyno'd so don't even know if it's better or worse. More to the point and to tie in with the power commander vs chip thread, unless you are prepared to spend a fortune on fine tuning so your motor is running 100% and fuelling is bang on, what difference is and air box going to make on its own?

[vonDutch]

What's the issue with a pod filter over the stacks
As opposed to standard location

There is more to the design of an intake channel then meets the eye, to say the least. The mass of air, the temperature, the frequency of a resonance, the length if the intake channel or the diameter, all can work in your advantage at one point and work against you in the other.

I take the closed characteristics of the OEM intake setup, together with the length of it works in your advantage, when it comes to performance. I like the open setup for looks and sound. Each his own...

[Micah / AF1 Racing]

The volume of an airbox when it comes to Hemlotz resonance is calcualted as the area/volume between the intake valves and back side of the air filter if equipped with a filter. Putting a filter right over the tops of the intake stacks makes a pretty small volume of air...which is resonant only at very low rpm, more volume, more rpm for beneficial resonance.

[PumpinIron]

Not to stir the pot even more but arent these bikes quick enough?

My thoughts exactly! A few horsepower here or there means nothing to any of us street riders. Heck, even on the track I doubt 99% of the people on this forum can actually push this bike to the limits.

However, some people have the money to blow, and for a lot of us tinkering with these bikes is just another hobby =]

[Micah / AF1 Racing]

I mention bore kits and heads earlier for this very reason, if you really are hunting real power gains that will make you go "no shit" in your helmet...internal work is required, or nitrous, or boost...bolt on's are not going to do it.