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This is why you have shown abnormal low end leanness results on the Dyno but the real facts are your bike is not lean at all in the low end.
AIS stands for Air Intake System, the system injects air into the exhaust system after the exhaust valves, the Dyno will see the extra injected air as a lean mixture. You need to block off the AIS every time you want to check the A/F ratio otherwise you will always get false A/F ratio readings. If you disconnect the connector at the AIS the valve will remain open^& the whole map will show over 16:1 A/F ratio from idle to rev limiter.
Any good Dyno operator should know this basic prerequisite before a Dyno run.
They won't give you all the Dyno graphs as there would be many of them, ask them for the Dyno run files they can Email them to you, I will decrypt them for you & will be able to tell exactly what your bike is doing on the Dyno.
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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
Last edited by Kev; 25-07-13 at 13:34.
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