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  #1  
Old 11-05-06, 21:58
JMC JMC is offline
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Throttle Sensor Adjustment

DISCLAIMER: YOU DO THIS AT YOUR OWN RISK AND MAY VOID THE MANUFACTURERS WARRANTY.

Throttle Sensor Adjustment:

To do this modification you need to put the bike in diag mode:

To access DIAG mode:

switch off Engine Run switch, switch OFF Key switch. Press both SELECT & RESET buttons and then switch ON Key switch. Keep SELECT & RESET buttons pressed for at least 8 seconds. Display then changes to "DIAG". Release SELECT & RESET buttons.
Select Diag mode by pressing again both SELECT & RESET buttons.
Select code below by pressing SELECT (up) or RESET (down).

On the digital display select 01 (throttle position) and make a note of the number on the screen. It should be between 16 - 18.

Now locate the throttle sensor, its on the right hand side of the bike behind the cylinder.

Slacken the two bolts indicated in the above photo. Using a T25 Torx.

If you rotate the sensor clockwise/ anti clockwise you will see the number of the digital display increase and decrease.

Set the value to between 15 & 18.

DISCLAIMER: YOU DO THIS AT YOUR OWN RISK AND MAY VOID THE MANUFACTURERS WARRANTY.
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Last edited by Kev; 11-08-07 at 08:15.
  #2  
Old 06-06-06, 13:49
Gravel Girl Gravel Girl is offline
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I'm wondering why you schould change the throttle sensor??
Can anyone please tell me?!

When schould you do it?
Why schould you do it?
What does it do the bike?
Etc...
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  #3  
Old 06-06-06, 20:28
Buck Buck is offline
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hello ,i hope this might be of some help.
The fuel injection uses the TPS to indicate throttle opening, so it can be adjusted to increase the amount of fuel without increasing the amount of air. The results are a richer mixture which should smooth any surging ,as the bike is run very lean for emission purposes and results in the surging some people are experiencing


TP - Throttle Position - This sensor provides input signals to the ECM as it reacts to throttle shaft rotation, telling the ECM where the throttle is, as well as if it's opening or closing, and how fast it's opening or closing. It is at the rear end of the throttle blade
  #4  
Old 08-06-06, 14:52
Gravel Girl Gravel Girl is offline
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Ahaaaa.... So thats why! Thanx a lot Buck
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  #5  
Old 16-08-06, 21:59
stzog stzog is offline
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So is it safe and must to increase the value to 26???The only mod i have is a K&N filter....

Last edited by stzog; 17-08-06 at 14:46.
  #6  
Old 05-10-06, 16:32
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Do get richer mixture by adjusting the throttle position sensor?

Whats the gain about adjusting it?

Is it when your opening the throttle you will notice the difference?

Last edited by Kev; 06-10-06 at 08:50.
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Old 06-10-06, 08:50
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Quote:
Originally Posted by PJS
Do get richer mixture by adjusting the throttle position sensor?

Whats the gain about adjusting it?

Is it when your opening the throttle you will notice the difference?
By increasing the TPS to 26 does increase the fueling, but does not help with the cutting out when the throttle is closed. There is a small gain in power.

But it will make the bike surge more, as when the throttle is closed the air is shut off for an idle mixture, the extra fuel at this point will cause a run on effect & does cause a surge. I have done quite allot of playing with the TPS lately & found the best setting for my bike is 16, hardly any surge. There again I can adjust up my fuel mixture using my Fuel Mod to give me that extra power.
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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 /
[
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; 10-09-10 at 10:03.
  #8  
Old 07-10-06, 14:54
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Hi everyone.

I was just wondering, if I had a Power Commander fitted, would I still need to adjust the TPS if using a DNA Stage 2 to make the fuel richer or would the Power Commander do this? I am tempted to buy a DNA Stage 2 filter but most advice I get is to fit a Power Commander if I do this, but they are quite expensive and I am not technical enough to do the Kev Mod. Therefore, would me adjusting the CO2 and the TPS be satisfactory as regards the fuel mixture with the DNA Stage 2?

Cheers,

Pingu.
  #9  
Old 07-10-06, 17:04
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CaptMoto CaptMoto is offline
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I might be wrong in saying this, and maybe Kev can correct me if I am, but I was told that the need to adjust the TPS (throttle sensor position) is to correct an improper setting of the TPS itself (frequent cut-outs, etc.) or to rectify a bike which is too lean and when this is not helped by increasing the CO1 levels at the dash.
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Last edited by CaptMoto; 07-10-06 at 19:47.
  #10  
Old 07-10-06, 18:16
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Quote:
Originally Posted by Pingu
Hi everyone.

I was just wondering, if I had a Power Commander fitted, would I still need to adjust the TPS if using a DNA Stage 2 to make the fuel richer or would the Power Commander do this? I am tempted to buy a DNA Stage 2 filter but most advice I get is to fit a Power Commander if I do this, but they are quite expensive and I am not technical enough to do the Kev Mod. Therefore, would me adjusting the CO2 and the TPS be satisfactory as regards the fuel mixture with the DNA Stage 2?

Cheers,

Pingu.
I installed the DNA stage 2 filter one week before I received the PC. I increased the CO from +8 to +50 (first tested the bike with +40) and the bike worked quite well. In fact, the stage 2 filter seemed to increase the power a lot at low and mid revs (http://www.xt660.com/showthread.php?t=661)
After installing the PC I noticed another equivalent power increase to the one obtained with the stage 2 filter but I could have also lived without the PC.
In my case, increasing the TPS value made the bike work really bad (tested it before installing the PC)
Just my 2 cents
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