A: To improve performance! Smoother running, reduce or
eliminate flame outs, easier starting and better throttle response.
Q: Why does this work?
A: This works for 2 reasons. First, due to manufacturing
tolerances, all throttle bodies are not absolutely identical.
Some let through slightly more air than others, and adjusting the
TPS voltage allows you to find the value that gives you the best
result for your specific throttle body. Second, some models
such as the KTM EXC models come with excessively lean fuel maps that
can lead to misfiring, stumbling and flame outs at small throttle
openings. Raising the TPS voltage slightly increases fueling
resulting in reduced flame outs and a significant improvement in
smoothness and performance, especially at small throttle openings.
Q: Is this really as simple as it
A: Yes, TPS adjustments are very simple!
Simply increase the
voltage .02v and test. If it's better, increase another .02v.
Continue as long as you see improvement. If you do not see an
improvement, go back .02v. You should find your perfect
setting very quickly.
Q: How are these shipped?
A: US Mail, with tracking. Tracking number will show in
your PayPal account.
Q: How long does it take to be delivered?
A: West coast USA orders usually arrive in 2-4 days. East
coast USA orders usually arrive in 3-5 days. International orders
vary by country. Most international orders are delivered in
1-3 weeks. South Africa takes several weeks.
A: Any bike that has a TPS plug
matching one of the pictures above. Compare your TPS plug to
the pictures, and whichever model matches your plug is the model
that you need. Contact us if you have any questions.
Q: What do I set my meter to?
A: Set your meter to DC Volts. Choose the mV setting if
your meter has the option. DO
NOT set your meter to DC current (amperage)!
Q: My bike does not have a key, will it work?
A: Yes! Either bump the start button briefly,
this will cause the TPS system to power-up for approximately 8
seconds (starting the motor is not necessary), or start the motor and take
your time. For kick-start-only bikes, simply start the motor.
Q: My bike is not electric start, will it work?
A: Yes, just start the motor and let it idle while measuring and
Q: Is there a warranty?
A: Yes, pigtails have a lifetime
warranty and powered models are covered for 12-months, both to the
Q: Do I need an external power supply?
Q: Will this work on non-KTM bikes?
A: YES! Unplug your TPS and look at the connector.
Simply match your connector to one of the pictures above.
Q: Where do I find the GPS map of the Croom Motorcycle Area?
I just wanted to say that I used your tool to set my tps.
I am amazed at the ease and the results. Thank you very
much, and my bike is running superb now!
My 2018 500 EXC was at .56 adjusted to .62 and is
much snappier off idle and no more flame outs coming off
idle in traffic .
Yes it was actually
.518v just a typo. I played with it in .02
increments. When I hit .560v Whoa! The front end
goes vertical at the crack of the throttle. This is
what I really needed. Im opening up more air vents
and removed the spark arrester. Great
improvements. Thank you for the explanation it
I can't believe the difference adjusting
the tps made. This tool is the bomb. Thanks!
Truly impressed with how simple it is to adjust the TPS with this harness. Great product and customer service!!!
I also just got the TPStool for my [ktm 450sxf]. Mine was set at .49 from the factory and
after I installed a fmf 4.1 slip on it popped like
crazy. The tps tool was perfect!, Hooked it up and
bumped it up to .51 and popping is gone. And it seems to
have more power as well. For me its a great buy
simply because its easy to use and you can be accurate
with your settings.
Thumper Talk Member
Just wanted to leave some feedback on the tps adjustment
tool. I have a 350 EXC-F with no mods to improve
the performance. ...... When I took the first reading
(stock), it was at 0.59. I changed it to 0.61 and wow,
the difference is night and day on my bike. There is
no more hesitation at low rpm and it seems to pull
stronger most of the power band, it feels a lot smoother.
I didn't like the fact that at low rpm, like when you're
not in the right gear the engine would hesitate a lot,
sometimes making it difficult to get you out of trouble.
This absolutely fixed it.
I highly recommend, this is easy and cheap to buy. Took
me about 5 minutes to do the change.
Ben - Thumper Talk Member
500EXC Was at.58 set it to .64 idle speed went up a
little. I have done several rides. Stock pipe, de-smog,
I don't need anything more, runs great. TOOL WORKS
Gym - Thumper Talk Member
Your tool is great [Matt]. Thanks for all the info you
have passed on. I tired .64 and it ran much better.
Orange - Thumper Talk Member
I just did mine today. 2014 350 exc-f with only
screen pulled. It started popping after I pulled the
screen. My factory setting was .58 and I went to .64,
I get better response now, and less popping ..
DM - Thumper Talk Member
...time for the TPS tool. Installed tool and did
measurements...0.574v was stock setting TPS. All TPS
adjustments done when the motor was cold. Loosen screw
and set it at 0.649v...road test again no seat of the
pants difference but could smell it was rich (I'm at
4000ft elev- in the high desert ). So I took it down to
0.625v.... road test..OMG the thing came ALIVE!. Low
end grunt better and the top end is insane...came up to
80mph and its still pulling. All around the power is
noticeably better .
Trail - Thumper Talk Member
I bought a 2014 KTM 500 EXC and rode around about 20
hours with the smog stuff intact. Pop on decel was
pretty bad. I blocked off the incoming air to the
air control valve, thinking that might help a bit, but
and the popping continued.
I was trying to see what the minimum changes I could do
I order to "stop the pop".
I got the TPS Tooland set my TPS to 0.64 went
for a ride and not only is the popping gone but the
throttle control is a lot better ...
Olav - Thumper Talk Member
I have to give [Matt] praise. He goesabove
and beyond in his customer support with the TPS Tool.
I had an issue that he patiently walked me through.
Farm - Thumper Talk Member
Just received my tps tool, so I drilled out my screen,
adjusted tps from .61 to .65 and no more hesitation,
no more popping on decel, super smooth
Easy to keep throttle at a constant speed now. Bike
was already desmogged, so this is all from just the
tps and drilling screen out.
Tire - Thumper Talk Member
.....Love how easy and straight forward this tool is to
use. It works
They should include this tool when you buy your bike!
The throttle response is great after adjusting the Tps.
It wasn't about more power for me. I now have crisp
throttle response. No slack whatsoever.
Positron - Thumper Talk Member
.as far as the tps wiring tool, its a must have
item! you'll use it through out the bikes life to
ensure the right setting is maintained.
Spud - Thumper Talk Member
I need to give an additional glowing recommendation
for the TPS tool. Big thanks [Matt]. ......... It took me longer to take
off the seat and the tank then to adjust the TPS sensor.
TPS was at factory .582v. The best I could get was
.642v. As others have stated "very sensative."
Got to thank ThumperTalk, and specifically travertt for
telling me to adjust the idle first and then the TPS to
get 500 exc to stop stalling. I took the bike out for a
15 minute ride. It's 20 degrees out. So far so good.
I chugged it down attempting to get it to stall. No
EZ - Thumper Talk Member
. .62 seems to be a good spot for tps on the '14
500xcw. No screwy idle problems, quick starting, clean
power delivery, few to no flame outs.
DrbillZ - Thumper Talk Member
Low end fueling feels great, which is where I do 95% of
my riding. The bike never once hinted at flaming out
and power was reliably there every time I needed it.
. This was a definite improvement over JD's tuner
spec and stock TPS voltage.
Pincushion - Thumper Talk Member
Adjusted tps to .64 from stock .58 better, tried it at
.66 and awesome definitely best mod for money
completely different throttle response now awesome!
mdsharon - Thumper Talk Member
Bike is still doing great. Thanks for a great
product! So nice not to have any more flame outs.
Dr. billZ - Thumper Talk Member
...The TPS was set at 0.68. I upped it to 0.75.
Starting issues cured and no more flame out
Farm - Thumper Talk Member
I have to start this off by giving a
BIGGGGGGGGGGGGGGGGGG Thank you to [Matt]! As he gave
me the utmost customer service with this purchase
and ensuing shipment .
Brute - Thumper Talk Member
.. set tps to .64.. it is night and day difference
feels like a different bike. Way more torque and better
throttle response. Well worth the money! Sounds 10
times better without all the popping ..
Keith - Thumper Talk Member
tillamook national forest in oregon coast....4 rides at
.579 volts..1 ride last weekend with TPS now set to
.638. Rides slower trails better since i moved tps and
increased rpms. fan still came on but i was trying to
blow up hills out there. but in general it didn't
stall, an seemed to start ez'er after warmed up!
thank you [Matt]!!
Brute - Thumper Talk Member
Finally had a chance to hook up the tps tool and give er
a test. Factor setting was like everyone else at 0.585.
Adjusted it to 0.628 and went for a rip down the street.
First off it started much better, idled maybe a hair
higher but that's minor. The big change was off idle
Incredible difference! No bog or hesitation what so
ever. Just crispy and quick.
.Thanks a million for the simple but