Tuned my YZ450FX into a 250 with my iPhone??

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This might be the single best reason to buy the Yamaha YZ450FX over the Honda, Kawasaki, or KTM! Love the ability to adjust the power characteristics to easily with my phone ANYWHERE.

Why don't the other manufacturers do this?

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[Alexcorey]

It’s really cool the adjustability that Yamaha has with the app.

[ful]

The benefit to this 450 is that it gives you options depending on what your riding that day. If your riding right trails you can tune it down. If your gonna ride desert, motocross or harescamble change it the map to accommodate that particular track or riding area. This bike gives you options rancher than one power output for all conditions. Nice video and like always great riding Kyle!

[briancastora]

My 18’ 450 FX with 220 hours on it and still running strong, will be replaced with another 450 FX in the near future.

[cstarbuilt]

I have a 13’ WR450 and I used the GYTR tuner and it makes it way more drivable. I keep the higher RPM’s hot and tune the power down in low rpm and throttle.

I also put a throttle tamer on and that really transforms the technical ability.

The older bikes like mine also had problems with flame out so I got an CO calibrator and that made the like better and flame outs pretty much go away.

[ianbruce]

Valuable information since this bike will be all mine soon

[nvmcrider]

I made mine a Dr. Jekyll and Mr. Hyde by doing similar to the butter map down low, but over 1/2 throttle and 6000 rpm switching it to the mx map. Still more than enough power down low for slower off-road situations and still a beast in the fast sandy wide open.

[BANANA_WATCH_]

Old fashion way to turn 450 into 350 is wear the rear break out by using it as traction control. Ben riding rm and cr 250 since twelve years old. Have cr250 and crf 450now. 38 years old.

[BANANA_WATCH_]

Hp and instant power affects chain pull vs your body weight. When power is given from front sproket which is bolted to frame. Through the swingarm to rear sprocket which is bolted to the hub. The rear suspension is affected. Different power different affect. Power brake bike. With front break then rear break then both front and rear break you will see.

[k.snyder_]

Travis Preston has a good map for the Yamahas I think one of the magazines has published them.

[shadyrack]

You should try a G2 throttle tamer on it. It completely changed my yz450fx and reduced the snap and made it manageable in anything. Highly recommend, many people do it with that bike

[avz]

the more you ride, the more you will like the more aggressive maps. some of the LITTLE more aggressive maps tend to not stall as much. I copied this one off the inter-web called "spunky feel with connection" that makes it feel a little more responsive, but it seems to resist stalling quite well, even more so then the torquey or traction maps.

[kylelangworthy]

You are 100% correct Kyle when you change the power characteristics it definitely will change the way the chassis response

[raptor]

Awesome I’m going to try this on Sunday

[tudorcotoi]

Kinda curious how much of a drinker that map turns the Yz into 😅
Keep playing and experimenting. And maybe provide us mere mortals with nice maps for our mortal needs.

[Antholography]

What you're describing is why I *love love love* the Green spring on the KTM bikes with the "Soft" ECU. I know you're not a fan; but for the Novice Rider like me - it makes the bike so much more pleasant to ride at slow slow slow speeds!

[BSm]

I think it's awesome that it makes that much difference!

[gpaull]

By the time you are good enough to actually use a 450 you have the skills and knowledge to know you don’t want one. I can count on one hand (with fingers to spare) the number of people I’ve ridden with that said they need a 450 and it was true.

[dadsdonttouch]

Motor torque affects chain tension which in turn affects suspension/chassis feeling.

[randytidwell]

get you some of the temperature strips from fx or pc racing and put it on the top of the left radiator. put the stock tune in it and get a good idea of the temperature reading on the tape and then put your rich map in it and watch how low the temperature goes. if you continue to dump more fuel into it it will keep going down until you quench the flame (foul plug). I'm really not telling you to go that far just telling you what's happening and you can watch it for yourself. in the future if you have one running on the hot side you will remember what the fuel can do to a motor in terms of temperature.

[jimhimesjr]

Kyle you should try out the new 23 450 xcf-w or the 500excf. They are both pretty smooth right out of the box, work fairly well in the tight stuff and not to heavy. I had a 17 250xc 2t and my brother in law had a 300 2t gas gas EFI and both switched back to these KTM 4 strokes as we connect trails with a little road riding. The 2 strokes sucked on the road. The 450 Yamaha was to punchy for me when I tried one and can’t be made street legal like the KTM’’s. These bikes do it all for me. I’m sure the 350 would be good too