2019 2020 KTM250SX on Dyno - Pro Circuit Pipe and power valve adjustments = POWER !!

This week Wade from Bunbury KTM and I thought we would show the huge power gains to be had with the 2019 and 2020 KTM 250 SX. We tested the bike on the Dynojet Dynometer to see what gains and power output it would make in each state of tune.
All runs were done on the same day and within about 2 hours. Hopefully you enjoy the upload.
Thanks for watching and leave a comment on what you think,, and what model you would like to see next !!

[@tracky396]

Great video 👏 people don’t realise the importance and influence fine tuning has before slamming a bunch of aftermarket mods all over the bike and expecting instant miracles.

[@jakehamilton2782]

Wicked guys great to see wade playing on the 2 banger, Patterson ducati use are legends definitely putting bunbury on the map!

[@turbobike749]

Always good reving things up with Wade on the dyno. Proper petrol head that bloke. :)

[@chodobaggins4506]

That's some outstanding youtube content boys. I love KTM 2smokes. I play with and tune many of the 250 and 300 EXC rang for my self and others but with out the luxury of a dyno using a very quiet rural road not far from my home in the southern suburbs of Perth.to date I ride a 2014 300 exc which Ive had from new .for it have a couple of different pipes several different mufflers a couple of different heads a couple of different sets of reeds. You could make some very popular content doing a similar style dyno vid utilising all the parts and combos as the KTM enduro rang is hugely popular around the world .

[@turbobike749]

Thanks James. The dyno is great to see what works and what doesnt. Wade from Bunbury KTM loves playing around with the R&D on these models too. Sounds like you love a dabble with mods too. Good stuff !

[@audiquattropower1rs]

From what I hear with the yellow spring the bike has more power at low revs and almost the same power at high revs For me, the yellow spring is the best all-round choice for the track. Great video by the way.............

[@turbobike749]

Thanks mate. Since the video he has upped the compression and it has made it even better again.

[@jeanlavallee2887]

Nice work

[@mikebrown41182]

Someone like You should get that stic bloc into the carb and put it on the dyno, like an unbiased product review to see if there is any significant gains. Cool video btw, always interesting to see what bolt on products can produce! 👍🏼

[@turbobike749]

Cheers mate 👍

[@sampep]

Thanks for sharing! Seem to have lost a tad on the low end but the spring woke up up for sure up high!!

[@turbobike749]

The guy that owns it said its soo good on track. Its fast !

[@keithpeterson3447]

Looked like the airbox mod dropped the bottom?

[@chalo212]

What helped the most with out a doubt was the airbox cover, wow... I have a completely closed airbox and my filter usually is dirty at the end of one riding day (I usually go 2hrs a day) with holes i may need to take an extra filter with me cause I've been told they get dirty quickAF

[@ossidog]

just a awesome outstanding use of You Tube, than you!

[@turbobike749]

Thanks mate. My pleasure.

[@TepcoCycleRepair]

What were your Air Fuel numbers?

[@olliek9924]

The music when changing parts kills me everytime 🤣🤣🤣

[@mrm82]

Ciao, ho le tue stesse modifiche, che carburazione hai usato Getto minimo? Getto max? Spillo conico? In più come prendi i riferimenti per la vite della regolazione della valvola di scarico? Complimenti per il video

[@williamktm9009]

What was your final power valve adjustment im very interested

[@federicopetadordeagujerosd8713]

Thanks

[@yx201cc8]

Man, that power curve after little mods.

[@turbobike749]

Not too bad hey !

[@yx201cc8]

@@turbobike749 That how is should be from factory. But regulation restrictions must do that :I

[@SPCxRecon]

Kaplan America states somewhere that fmf combo (fmf powercore 2 and fatty pipe) produced more power on the dyno than pro circuit for them on there 250s, and 500s.

[@vxlgsi]

Bit quick with the Info what were the final gains?

[@turbobike749]

Ended up making about 10% more power and torque in the midrange over stock. Better for stretching ya arms

[@theroo5861]

Well done! One question, the red spring adjustment, what was it? From the stock position (assuming you started there), CCW or CW and how far (1/8, 1/4, 1/2?). I realize there is probably variation from bike to bike but it would be a good starting point. I'm going back to a two stroke, new KTM 250 Sx at the end of the week, so this is very stuff for me.

[@turbobike749]

Hi man, I tried to get hold of my mate to check out this info but cant track him down. Maybe he will see this comment and reply to it. Let me know if you get the bike and still need the info

[@theroo5861]

@@turbobike749 Got the bike, rode today. played around with the PV springs today. I watched the video again, looks like he went Flush. He turned it a lot, I would be interested in knowing the position. Thanks

[@brandonbladen4691]

On my TC 250 I am running 1-1/2 turns in from all the way out. Last time I rode it I was on the yellow spring. I just swapped the red spring in and gunna leave it at 1-1/2 turns in. Bike has been SLOW up top but the bottom has been gnarly. I hope it will rev out now. If so there will never be a 450 in my garage again.

[@bloomerb4162]

@@brandonbladen4691 how many turns out or in were you on the yellow spring? I have TC 250 with 300 kit and the yellow spring is in, I'm thinking I want power to come on faster for coming out of turns and hitting jumps, I don't carry much speed thru corners, I'm a beginer. Oh and it has an 11 oz fly wheel weight, so that could be keeping the bike from revving as quickly.

[@brandonbladen4691]

@@bloomerb4162 I have the yellow spring in it (which is stock) 1-1/2 turn in from all the way out. I also drilled three holes in the side panels on each side.

[@Sweethomemovers]

Awesowe video, keep it up. Sty cnnted :)

[@turbobike749]

Thank you! Cheers!

[@bptryp]

Now we need Pro Circuit vs FMF vs Scalvini

[@turbobike749]

Those Scalvini pipes seem good hey

[@jasonahl884]

Tpi?

[@joshb6420]

Just goes to show how much power is left with good parts and tuning

[@derek3107]

mods reduced low end torque, that is clear. I like how the power was shifted around with those mods.

[@LizardHunter777]

A small loss in a 1k rpm window for a huge gain over 3.5k rpm. Definitely did more than just shift the power.

[@TraysComedy]

I have this same exact bike but my setup is pro circuit platinum with a pro circuit 304 shorty, boyesen reeds, lectron carburetor and a vented air box cover kinda like yours. I wonder what kind of power im making?

[@turbobike749]

Probably something similar

[@keithpeterson3447]

Less with that Lectron. 😒

[@TraysComedy]

@@keithpeterson3447 why less?

[@keithpeterson3447]

@@TraysComedy To make power, you need to burn more fuel. More fuel burned is more power. Obviously the fuel needs to be able to be burned vs just adding more. More fuel & not burning it will result in a rich condition & power loss. So less fuel burned is gonna drop power. The metering rod type fueling system on the Lectron & SC2 don't deliver the fuel in as good of a state for combustion than a Mikuni or Keihin. The Keihin & Mikuni have air bleeds feeding into the main fuel delivery system BEFORE the fuel enters the carb bore with the main airflow. These bleeds help "break up" the droplets of gas into smaller droplets compared to the bigger droplets of the metering rod stuff pf the Lectron or SC2. This fuel won't burn as complete so the power is down. This means less fuel used/burned for power per stroke. When less fuel is able to be burned, less can be sent through per cycle. Thus the power drop BUT this is where the fuel economy comes in for the Lectron or SC2. They can get further on the same fuel amount because they burn less fuel. Burning less fuel makes less power. The Lectron or SC2 also need to be tuned as much as any other carb out there. The Lectron is a way better carb than the SC2 but I still wouldn't waste my money on one. They are both inferior to the Keihin or Mikuni. The Mikuni being a problem to tune is total b.s. as well. One guy can't jet & suddenly the carb is junk. The Keihin is the best all around carb but the Mikuni is absolutely solid & right there.

[@TraysComedy]

@@keithpeterson3447 got it.. understood!

[@russianrouletteracing]

Is this with the stock carb and jetting? Next put a jd jetted keihin carb on !

[@turbobike749]

Yep all the jetting was the same on all testing. Pretty sure it was stock too.

[@russianrouletteracing]

TURBOBIKE stock jetting is known for not being very good on these mikuni carbs. You are leaving performance on the table. A Keihin carb with JD jetting already installed will cost only $300 !

[@russianrouletteracing]

TURBOBIKE in addition an RK TEK head would probably be a better bang for your buck vs the silencer!

[@keithpeterson3447]

These bikes are definitely lean. Bottom & top

[@HennyTRX3773]

Have you done a bills pipe set up vs like fmf

[@turbobike749]

Sorry Jonathan I havent tested those combos mate.

[@HennyTRX3773]

@@turbobike749 would really love to see that video. Alotnofngreat reviews about bills pipe on ktm250sx saying better power all around

[@darylsmioth1904]

Yes a pipe dyno shootout would be great and of course compare them to stock.

[@HennyTRX3773]

@@darylsmioth1904 I have every pipe made for 2014 ktm250sx now a 300sx

[@sciencemilitia1853]

What’s the song at 6:00?

[@turbobike749]

Hi mate, its just one of the few that I have in my editing software.

[@nate_942]

Hey, i know im 2 years late but the song is called Splashing Around by The Green Orbs. Here's a link of it kzbin.info/www/bejne/gnWqi3Smp7N6jdE

[@jettlawrence760]

Not a controlled experiment. Much of that power could have came from simple spring swap and cover mod. Should have shown HP numbers with stock exhaust pipes and PV swap and cover mod to show true gains.

[@turbobike749]

Cheers for the comment Jett. So many combos that we could have done. This is what we could do with the time we could both put aside. Good luck with the racing too mate !

[@jordanperon7523]

Do a pull with no secondary spring in the bike

[@gky3019]

Wow, doesn't the 2020 husqvarna FC 250 only make 40 hp? A whopping 10 hp difference is incredible on this bike.

[@turbobike749]

Apparently the 2019 and 2020 are the same engine specs. So this would be KTMs latest powerplant in the 250 two-stroke range. Not sure what the Huskys run.

[@jakehoskins9669]

You are talking about a four stroke, that’s why there is a large difference. The bike in this video is a 250 two stroke, so they are entirely different and can’t be compared

[@rogermorgan1290]

@@turbobike749 to

[@denniswilder3014]

If your not re jetting you are not making more power the purpose is more fuel more power all your doing is doing an expensive jet change p.s it still seams kinda on the fat side even with air box mod lol

[@turbobike749]

We already had played with the jetting and knew where it wanted to be for each parts combo. For this upload we threw parts at it to see what did what. It goes soo well this thing. Its a ripper.

[@denniswilder3014]

Yes it sounds good should of included that in the video I come from a snowmobile background and built a couple of pro stock 700 and a thousand and was like all that and no jetting changes good job on kinda stage tuning

[@turbobike749]

Cheers mate. Thanks

[@bubelparkour]

Waste of money for the mods.Only 1hp more its just funny 🤣🤣. Just buy bigger cylider or bike.

[@donaldblank8873]

You can gain a horse power by running better gas, not impressed,