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Old 26-04-11, 01:13
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Kev Kev is offline
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Join Date: May 2006
Location: Brisbane, Australia
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Quote:
Originally Posted by tripletom View Post
With regards to the tuning, you need to think of the bigger picture. With an air filter change and wanting to push more fuel in through the use of a PC, then you want to be able to push those gasses out more, so you might want to consider changing your silencer as well.
Thing is, all the costs mount up and you don't get a huge amount more power.
It depends on the money you spend, you can get gains from 10 to 50%.

The thing that most riders get wrong is a Power commander is not a performance tool it is a tunning tool to allow you to the get the most HP & Torque out of your mods. The other bolt on mods is what gives you the gains.

The Exhaust system only really offers around a 2.5HP gain, the intake filter system can offer a 5 to 6HP gain by them selves. So you can see the XT660 motor is quite restricted on the intake side, start combining mods & the HP & torque will start to climb. A 50HP or 60HP XT660 is a very different bike compared to a standard XT.
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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