Hi all,
I�ve had the bike for a couple of months now and from day one I�ve not been happy with the fueling/surging problem.
I�ve read the forum till my eyes are sore and with so many people saying conflicting things regarding settings for Co etc. I�ve decided to ask.
My bike is a 2015 with the O2 sensor, am I wasting my time changing the Co and TPS settings? Currently got them on Co - 22, TPS - 17 and still getting annoyed with it surging. Tried the Co at 18 and it cut out changing down into a roundabout.
I�m running stock pipes and filter.
Am I wasting my time? Would a PCv be a waste of money with standard pipes?
I may go 2 Into 1 in the future.

Regards- Jim

Have you thought of 'Kev's' mods?...

Yes, Kevs mods are of interest, but I�m not sure if they are suitable for my bike. The only info I can find is on the earlier bikes. I�d like to find out exactly how it would work on mine and what the effects are. I�d really like to hear from someone that has a later model like mine, that has done the mods.

Cheers
Jim

Mines a 2009 and tbh I wasnt aware that it differed to yours. The mods are not performance mods but they ARE effective at making the bike run as it should have done when it came out of the factory.

Both my bike and my Bro's bike run sweet ..

Performance wise DNA air filters flow air better..Stage 1 replaces the original air filter,stage 2 replaces the side of the airbox with an air filter.

Have a read here:
https://www.xt660.com/showthread.php?t=23042
https://www.xt660.com/showthread.php?t=8546

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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