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Old 11-04-15, 08:12
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Kev Kev is offline
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Join Date: May 2006
Location: Brisbane, Australia
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I just want to say we have never seen a XT burn any valves ever no mater what mods have been bolted to them, even running stage 1 & 2 filters + free flow pipes, with this set up I have personally Dyno tested the A/F ratio's & so did Freeze a Dyno expert from South Africa & the A/F ratios run around ratio 14.5 to 15:1.

But one thing I will argue about & I can prove 100% with Dyno results, at 15:1 the bike will not have the torque or HP compared to a bike running the exact same mods at a richer A/F ratio between 13.2:1 & 13.6:1. Yes the bike will run at 15:1 all day long but at a loss of HP & Torque.

My adjustable fuel mod corrects a lean A/F ratio from hard ware that has been fitted like free flow filters & pipes, the O2 controller corrects the lean closed loop A/F ratio. My fuel mod is a very simple fuel adjuster that does & have proven this so many times, it can correct the A/F ratio by up to 0.8:1 richer, https://www.youtube.com/watch?v=glkdBO8aZm0 if you want the best tuning tools out there buy a PCV & get a custom Dyno PCV map at 6 times the price.

One other thing these XT's do not run rich with all the intake & exhaust mods, I challenge anyone to show me Dyno proof that they do as I have personally Dyno tested every version of XT660 ECU, every single mod ever bolted to a XT including all the big bore kit in varying sizes + stroker cranks + quite a few different cams?

Here is some data logging I have been doing on the latest KTM 1290's, I would love to see how the guys that bag my mods have actually measured & Dyno tested the mods A/F ratio's. http://www.ktmsmt.com/viewtopic.php?f=29&t=6888&p=42781#p42781

MT09's http://mt09.motorcycle-talk.com/forum/mt-09-modifications/1565-kevs-anti-throttle-surge-mod-25.html

I don't tune bikes with the seat of my pants I used the latest Data logging tools & reconfirm all my work on a Dyno, I spend around Oz$2500.00 a year on test mods & custom Dyno PCV maps for different bikes & can prove 100% what I say.

Also say that the XT660 ECU can learn is the biggest load of rubbish I have every heard, if you under stand the X'660's mapping & how all the functions of a XT's ECU works you would know 100% the man does no what he is talking about. The variable difference would be from the F/L switch trim inputs between the TPS/RPM & the intake pressure sensor/RPM mapping with the valuables inputs going to the ECU's, the ECU learns nothing it is has pre-written mapping & the variables are changed with in the mapping from the sensor inputs.
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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 / 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


Last edited by Kev; 11-04-15 at 09:39.