Hey,

Just got a couple of questions , I live in Australia and have no idea if you can get the DNA filters from somewhere other than shipped from Europe? also does the stock AUS foam air filter element filter air better than the paper ones? is there an advantage with foam filters other than that you can wash them?

About the Kev Mod / O2 Controller; the way I understand it the Kev Mod changes the A/F ratio only in the open loop, is that right? and the O2 Controller changes the closed loop to a fixed 13.6 (I think) A/F ratio? would that mean that richening the open loop with a Kev Mod would make the change from closed to open loop harsher than just having a O2 Controller? or have I got this all wrong xD.

Cheers, Andy

If you are riding in dust... say well away from DNA / K&N type of filter..
for sealed road use no probs...
for offroad..oiled foam then the standard Yamaha paper..

Heres a air filter test... note the K&N was in the bottom
3 filters in every test.... "bottom in most"
http://www.dieselbombers.com/chevrol...r-testing.html

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Harley Davidson..
The easyest way to turn gasoline into noise with out the side efect of horse power...

Hmm that's very interesting read, thanks. With the dusty gravel roads around here I might just stick to oiled foam filters, cheaper too

When fitting my O2 controller you are right in saying it changes the closed loop fuelling from 14,7:1 to 13,6:1, the change will make be much smoother with the O2 controller from closed to open to closed loops as the closed & open loop circuits on a completely standard bike will be roughly the same at 13,6:1.

With my fuel mod you can correct the lean A/F ratio of a completely standard XT660 from around 13.6:1 open loop to around 13,2:1 open loop, as the XT660 develops it's best HP & Torque at 13,2:1.

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

Kev is basically a genius.....my bike was a pogo stick before I "met" Kev and his mods.....

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(Now sold on, sob) 2011 Blue XT660X with gold wheels, was 26,500 km.
Engine mods: K&N Stage 1 filter, DNA Stage 2 filter, snorkel removed, Kev fuel mod fitted.
Plus: smoked Puig screen, Yam aluminium sump guard, Yamaha / Acerbis handguards, Givi Trekker aluminium side cases, Leo Vince X3 cans plus Kev front fork mod and Fender Xtender. Just fitted Michelin Road Pilot 3 tyres.

SOLD the XTX for a Super Ten 1200. And just bought a Raptor 700 so staying on here for some tips....