Throttle Position Sensor (TPS) Adjustment Tools

For KTM, Husqvarna, Polaris, Arctic Cat, Honda, Kawasaki, Suzuki, Yamaha and more!

For motorcycles, ATVs, UTVs, SXSs and any other fuel injected motor with adjustable TPS

Resolve popping, hard starting, stumbling and flameouts while improving throttle response, by fine tuning your TPS Sensor

Free Shipping Worldwide!

  Common TPS Settings

What Our Customers Are Saying

Discussion And Questions Click Here 

HowTo Videos Here


Pro Self-Powered
All Adapters Version


$36.95, Ships Free Model info below

$159.95, Ships Free

** International orders - Please use our eBay
for more reliable shipping

(All Adapters Version)

  Pigtail Pro
Accurately and easily adjust the TPS
Adapter / Plugs Choose 1 (details below) 6 included (Models 1-5 plus universal)
Set the initial TPS voltage
Reads the entire TPS range from idle to full throttle.  Perfect for setting the TPS as well as diagnosing TPS problems
5V reference

Uses bike's ECU

Super precise 5V reference (+/- 0.04%), never needs adjustment
Volt meter Use your own Built-in
5 digit LED
Made from durable ABS plastic with UL94-5VA flame rating
Runs on standard 9V battery
Better than Polaris 2201519-A TPS test kit


12 Month


Choosing a plug style

Model 1

  • Any TPS matching the picture above

  • EXC,  XCF-W with fuel injection (2016 and earlier)

  • SXF and XC-F (2012 and earlier with fuel injection)

  • XC-F 6-days (2013 -2015)

  • Husaberg FX450, FE501S (2014 and earlier)

  • Husqvarna FE and FE-S (2016 and earlier)

  • Husqvarna SMR 511

  • KX250F (2012)


Model 2

  • Any TPS matching the picture above

  • SXF (2013-2015, except 6-days)

  • XC-F (2013-2015)

  • EXC and XC-W with carburetors (all years)

  • KTM 690 with triangular plug

  • KTM 950 (carburetor)

  • KTM 990*

  • Husqvarna TE 310R

  • Husqvarna FC (2014-2015)

  • Yamaha YZ/WR 250F (2006-2013)

  • KX250F (2013-2019)

  • KX450F (2009-2019)

  • Polaris Ranger 700, 800 (2004-2010)

  • Polaris RZR 800 (2008-2014)

  • Polaris Scrambler XP 850 (2013)

  • Polaris Sportsman 700 (2004-2009)

  • Polaris Sportsman 800 (2005-1014)

  • Polaris Sportsman 850 (2013)

  • Polaris Sportsman XP 850 (2013)

  • Many Polaris snowmobiles (2013+)

  • Suzuki RMX with triangular plug

* KTM 990 - Use black and green wires to take reading



Model 3

  • Any TPS matching the picture above

  • KTM EXC-F, XCF-W (2017+)

  • KTM XC-F (2016+)

  • KTM SXF (2016+)

  • KTM SXF Factory Edition

  • KTM 690 with NON-triangular plug

  • Husqvarna  FE (2017+)

  • Husqvarna FC (2016+)

  • Yamaha YZ250F (2014+)

  • Many Honda models


Model 4

  • Only available with powered meter

  • Any TPS matching the picture above

  • Most (all?) Polaris snowmobiles through 2013

  • Polaris RZR 570 (2012-2016)

  • Polaris RZR 800 (2011-2014)

  • Polaris Sportsman 550 (2010-2013)

  • Polaris Sportsman 500 (2006-2015)

  • Polaris Sportsman 570 (2014-2016)

  • Polaris Sportsman ACE 570 (2015)

  • Polaris Ranger 500 (2011-2013)

  • Many Arcitic Cat snowmobiles




  • Q: How can I get in touch with you directly?
  • A: Email me at:   mwolfe [at] qualitysmart (dot) com
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  • Q: Can I talk to other customers to ask about their experiences with this tool?
  • A: Yes please do!  Click here to join the discussion on the message forum.
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  • Q: Why is adjusting my TPS necessary?
  • A: To improve performance!  Smoother running, reduce or eliminate flame outs, easier starting and better throttle response.    
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  • 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.
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  • Q: Is this really as simple as it sounds?  
  • 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. 
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  • Q: How are these shipped?
  • A: US Mail, with tracking.  Tracking number will show in your PayPal account.
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  • 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. 
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  • Q: What models does it work on? 
  • A: Any engine 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.
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  • 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)!     
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  • 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.  Or best of all, use our Pro Powered meter and take your time!  
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  • Q: My bike is not electric start, will it work?
  • A: Yes, either start the motor and let it idle while adjusting if using the pigtail TPSTool, or use our Pro Powered meter. 
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  • Q: Is there a warranty?
  • A: Yes, pigtails have a lifetime warranty and powered models are covered for 12-months, both to the original purchaser.
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  • Q: Do I need an external power supply?
  • A: No
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  • Q: What is your return, refund and exchange policy?
  • A: We accept returns for a full refund within 30 days.  Pigtails can be exchanged at any time for repair or replacement.  If your Pro Powered TPSTool has a problem within the first 12 months we will repair or replace it at no cost to you.  If it has a problem outside the first 12 months it can be returned for a repair.  Our goal is to keep our customers happy so please email if you have any questions at all! 

  • Q: Where do I find the GPS map of the Croom Motorcycle Area?
  • A: Right here


Words from our customers:

Just wanted to take a moment to thank you again for the exceptional service you provided.  ...

The one you sent worked great and I think it has solved my starting problem.

Thanks again,

Received my TPS Tool in Alberta Canada only 9 days after shipment from Florida, not bad for Free!

I Ride a KTM 250 XCF-W and since I’ve owned it I’ve had trouble with Flameouts and Throttle response and overall lack of performance for what I felt a 250 4 stroke should have. After watching Matt’s videos I was sure even the 250 could benefit from some TPS Tuning.

When out for a couple hours on the Frozen lake to Dial it in on the ice race track our town plows for our riding association. It is so fun to ride !!  ... My first try was at 0.630 which was noticeably better throttle response picked up and solved most of the flame out issues but wasn’t a lot faster for my butt dyno. I took a few more adjustments to .66 and 0.69 which were better still, front wheel started coming up in 2nd gear but still needed to drop the clutch to pop er up. 0.72 I was getting boggy at idle and even throttle response started to drop was okay but definitely worse than before. So I went back down to 0.7044. And found that to be the sweet spot. My whole ownership of the bike has consisted of trouble lifting the front wheel even in 1st, now it's coming up in second nice and Controlled! Soooo happy! I've only had the bike for 6 Months but this was the most fun I've had on it by a long shot. I can’t wait for the snow to melt and get back to our single track riding! Also, I was impressed with the performance gain all the way through the power band too, in the straight of the track I was pulling through the gears and up over 100 km/h (60mph) pretty quickly and had a lot more to give if the track was longer lol, even got a little crowd watching me have all the fun haha. Riding buddies kept telling me to change sprockets to get that tire up but I didn't want to sacrifice my top end for that.

Love how easy this product was to use, and the free shipping is fast! Maybe most of all, Matt is so willing to help and provides excellent guidance to his customers, and really goes above and beyond!

Brett. L

Hey Matt

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!

D. Francis 

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 .

Jody M.

Hi Matt. 
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. I’m opening up more air vents and removed the spark arrester.   Great improvements. Thank you for the explanation it really helps. 

Steve T

I can't believe the difference adjusting the tps made. This tool is the bomb. Thanks!

Dakota M.  

Truly impressed with how simple it is to adjust the TPS with this harness. Great product and customer service!!!

Michael N

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.

Motoman - 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 GREAT!!! THANKS!!!

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 exhaust 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 exhaust 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 Tool and 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 goes above 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 throttle response.  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 stalls!!  ……...

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

Mucho better!

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 throttle response. Incredible difference! No bog or hesitation what so ever. Just crispy and quick. …………………….Thanks a million for the simple but necessary tool!

RyeMc - Thumper Talk Member

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