TPS Tuner 12/16 EXC/XCW/XCW-F/FE/FE-S #1
This is the single best way to get your bike running better with it's capability to add or subtract fuel to your engine. It comes pre calibrated at 5.00 volts. You can calibrate with the jumper wire as shown and dial in 5.00 V output with a screw on the side. Set tps at to a wide variety of voltage outputs by just unclipping you stock tps clip and plugging in the tps tool as shown. Loosen screw holding tps and as you turn watch the voltage change. A higher output equals more fuel to your engine. Tighten screw, remove tps tool and re plug your tps tool in and test. Try different settings to see what you like best. Can be done with throttle body on bike on the side of the trail in a few minutes. California customers should only turn past .60 if closed course competition so you don't violate emissions standards
TPS tool KTM fits for KTM 2012-16 EXC/XCW , 2011-12 SX
Husky 14-16 FE/FE-S
TPS is short for throttle position sensor. With fuel injection, it is the part that tells the computer how far the throttle is open. When the throttle is closed, the tps sends a certain amount of voltage , say .60 volts, to the computer,also known as the ecu or electronic control unit.
The ecu already knows that when the tps is putting out .60 volts, that the throttle is closed, or at zero percent open. It knows the bike is just getting enough air to start and idle and the ecu is pre-programmed to give the engine enough fuel for it to idle.
When the throttle is wide open, the ecu sees the throttle at 100% open. At 100%, on the 2012-16 EXC, the tps is putting out a voltage of around 3.74 volts or a bit higher. Basically, as the tps's voltage output increases, the ecu thinks that the throttle is open further and gives the bike more fuel, to keep up with the extra air flowing past the butterfly or throttle plate. The TPS is the main input to the ecu, other than the rpm pick up, to get the engine the right amount of fuel.
The tps itself is adjustable (can be moved forward or back) on the 2012-16 exc's and xcw's. This means that when you twist the tps against the way the throttle opens, the voltage output is a bit higher at every throttle opening than it really should be. The ecu only see's the voltage number. It gives the engine a little more fuel now than it gave it before, even though the amount of air is still the same. This is how you fool the ecu into providing the engine more fuel, with tps turning, or "TPS TUNING", as it's known.
This is our tps tuning tool. It's a voltage source that puts exactly 5.00 volts into the tps. This is how the factory sets the tps, by putting 5.00 volts into it and then setting it's output voltage.
All the numbers of tps voltage in your service manual are based on exactly 5.00 volts going into the tps. If more voltage goes into the tips, then the output number is higher. If less, then it's lower.
With fluctuating input voltage, you can never really correctly set or tune your tps for desired performance.
Trying to tune your tps by any other means than using a perfect 5.oo volt source, like this, with your bike NOT RUNNING, is the only correct way to evaluate the difference that increasing or decreasing your tps output voltage has on your bike.
It's like trying a differnt tire every ride but with a different air pressure every time. You havae to many things changing to really know what's better.
This is our tps tool putting out exactly 5.00 volts. By placing the little jumper wire between the red and yellow wire and turning the adjustment screw on the side, you can raise or lower the voltage coming out of the box, until you get to exactly 5.00 volts. These tools come pre set so you don't need to worry about setting the output voltage to often,
This is your throttle position sensor here on the side of the throttle body. It's under the rubber cover on the shifter side. You can get to it with the tank on so you can loosen the screw holding it down, plug the tool in and change the output voltage on the side of thee trail. Then tighten the screw down, disconnect the tool, plug your tps clip back in and ride again. An easy way to see if you like it better or worse.
This round black knob here, on the upper, shifter side of the throttle body, is the knob that controls the idle speed.
If you turn it clockwise the idle will lower and if you turn counter clockwise it will raise. Be sure the knob is pushed in when adjusting or the bike will just idle real high.
After adjusting the tps output, you may have to re adjust your idle speed.