The weakest point for water entry is the point where water can enter the air box, so one can only ride through a river crossing keeping the water level below the lowest point of entry into the air box, in your case water must stay below the DNA filter.
No mater what air filter or air box mod you have if you tip the bike over & it goes under, water will enter the air box & possibly the motor. If this happens remove spark plug, remove the air filter & clean all the water out of the air box, the safest next step is to put the bike into gear (5th is best) & rock the bike back & forwards forcing the water out of the cylinder, I would unbolt the muffler if you have a cat as you don't really don't want to push water through the cat, stand the muffler upright to drain any water out of it, if you have an after market can I would not bother removing the can, I would then crank the bike over using the starter motor until all signs of water vapour have gone. Being fuel injected the fuel system should not be contaminated, refit the spark plug & start the bike, let run for a bit then refit the muffler. I would change the oil & filter if there is any signs of water contamination.
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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 /
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My 07 XTX
Raptor 700 cylinder 102mm
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Modified Crank Case to take a 105mm Raptor Cylinder
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11:1 102mm JE Raptor piston
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Stage 1 Raptor Hot Cam
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Ported head
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Colder Spark Plug
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+2mm Throttle body
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DNA stage 1 & 2 filters
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Modified Air Box
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Snorkel removed
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Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts
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Recovered seat in Black
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O2 Eliminator
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My 09 XTX
59HP
at the rear wheel
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Stage 2 Raptor Hot Cam
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DNA stage 3 Air Box
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Carbon Can Exhausts
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Modified Exhaust Link Pipes
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PCIII With Custom Fuel Map
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Wideband Commander O2 Data logger
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LCD100 Dyno Jet display & fuel adjuster
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2500 OHM HT lead instead of a 10K OHM XT lead
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Extra Coolant Cooler
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Protaper Fat Bars
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Tail Tidy With LED Tail Light
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OKE Protection Knobs
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LED indicators
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AIS blocked
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Modified rear sprocket rubbers
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Rear Foot Pegs removed
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09 ECU With 02 Sensor Changed To A 06 ECU
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Complete wiring harnes Changed from 09 to 04
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Home made LED resistor flasher
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Hole drilled in the fuel tank filler neck to allow quicker filling
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Modified Bar End Weights
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Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer
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Changed front & rear guards from blue to black
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47T rear sprocket
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Speedo Healer V4.0
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Kev throttle cam mod
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Throttle grip mod
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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
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