What air filter?

[northern]

I made that mod to my K&N, but it won't fit to my turbo set up, so if somebody needs it, I can sell it...

@T 24
Jussi, I would be interested of your K&N, if you still have it and want to sell. What would be your price?

I'm currently on holidays abroad, but will be soon back, so we can discuss details. P.M. me, if you interested.

[grog]

Barmy, will do that as well as air blast. Think i have about 5 telescopic magnets. All shapes n sizes. Would love to find that washer but guessing its on garage floor somewhere.

[Hooli]

I put a Hiflo in mine 6 months because of the stupid price of OEM over here, but can't say I noticed a difference. Maybe there is 
How did you mod yours Hooli?

Just seen this.

I can't recall if I drilled the four spot welds out or just sliced around it with a dremel.

[grog]

this morn, got magnets, air blaster into air box. no sign of lost washer. found some longer bolts. K&N fitted. checked external fuel filter, all good, gave it a air blast. bike does sound slightly diff, imagination? 39mm intake now 51mm. free revved to around 6k, much quieter for sure.

[northern]

Just to compare - K&N inlet is 56mm, versus OEM 48mm and Hiflo 39mm

I replace my Hiflo to Suzuki OEM.
Hiflo intake is 39mm, OEM intake is 48mm - it's area is 34% bigger than hiflo one. Also it's slightly higher - also easy to get air throw.

Local prices are ~25€ for Hiflo and 35€ for oem, so my choice from now on is Suzuki OEM.

[Andre]

Just to compare - K&N inlet is 56mm, versus OEM 48mm and Hiflo 39mm

The 56 mm is for the modified K&N according to T24. Grog reports 51 mm.

[northern]

ouh....
You right @Andre , I totally miss this. 

[grog]

51mm is standard k&n, might be out a bit. couple of weeks with it in. waiting your report Northern. i have one but will wait. i tried to work out area of intake between K&N, compared to hi flo/ klasa racing with smaller inlet.they also have metal tube that goes way down into filter. not sure why. my calculations, very rough, i think K&N has around 5x as much intake area. i promoted the klaas racing as very good, it was. i now have changed my mind. your report Northern then ill comment. 

[northern]

@grog
So,  I have done few hundred kilometers with new filter. What can I say - nothing.
Bike is fast and accelerates good. But is K&N better then OEM filter - really hard to say.

So my plans are - fix fueling, play with Autotune and POD-300, and at beginning next summer go to dyno, to compare OEM and modified K&N performance. But there is some time, before it happens. 

[T 24]

@grog
So,  I have done few hundred kilometers with new filter. What can I say - nothing.
Bike is fast and accelerates good. But is K&N better then OEM filter - really hard to say.

So my plans are - fix fueling, play with Autotune and POD-300, and at beginning next summer go to dyno, to compare OEM and modified K&N performance. But there is some time, before it happens. 

Remember to fix fueling in both cases on dyno. I needed a bit more fuel with modified K&N on top end, but I don't have any dyno numbers concerning to that mod.
The difference isn't big, if there is any...

[Kiwifruit]

Am trying to help a friend who is modding a GSX 1100. He would like to know the physical diamentions of an OEM 1400 air filter.
Because I'm lazy l thought l'd ask before pulling mine out to measure it.
TIA.

[Andre]

OEM air filter dimensions

Bottom diameter: 8.5 cm
Height bottom to mounting plate: 13.5 cm
Mounting plate diameter: 10.3 cm
Mounting holes across ctc: 11 cm
Mounting holes next to each other ctc: 7.9 cm

[Kiwifruit]

Many thanks Andre   

[Hooli]

Interesting update on this.

I'd noticed a slight flatspot around 3/4 throttle when running the hi-flo (should be called lo-flo with the tiny intake) so as an experiement I put back an original OEM filter that's done about 50k miles. That's the flat spot cured, the bike feels more responsive & isn't making as much intake noise so obviously isn't slightly strangled anymore.

Guess I'll have to get a real filter for it, as pattern ones are crap.

[Speedy1959]

Whats 3/4 throttle ?
What are all those numbers that go higher than 4 on the right hand clock ?