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I'm thinking pre-mixed TBI will be the closed-course offering on those bikes, developed for performance reasons and European EXCs (XCWs here) will still be TPI. I suppose it's also possible that our XCWs will get the TBI system, since I believe they're sold as closed-course bikes too, but I think oil injection is a significant selling point for trail riders.
I'm planning to buy the first one I can get my hands on too, but I'm not crazy about the plastic yet, so I guess I'm hoping that Husky or Gas Gas nails the styling. We'll see in a few weeks!
The bike has injection (which one I don‘t know) with a twin cable throttle housing, an electric PV, electric start and the new chassis without oil tank. What‘s interesting is that in the video the bike starts and rides off without a single puff of smoke coming out of the exhaust.
Source: vid from MotoAdviser https://youtu.be/nNHgnbQ7nWk
The Shop
Most KTM Offroad 2 strokes are road legal in Europe. TBI is just for closed course race bikes.
I know the EURO 4 & 5 stuff is pretty strict, but I also know engineers are pretty amazing at working through this sort of thing. With the right feedback loops, I could see a more complete burn with a TBI system, and if oil management is better they could very much pass emissions.
Are we positive the bikes are TBI not a TPI+TBI hybrid? (two injectors on the motor, one on the throttle body). Has anyone seen an EGT on the exhaust? (curious, this would help from a tuning perspective)
Moto companies are pretty notorious for trying to minimize skus if possible. Having two different fuel injection systems runs in the face of this.
Final thought, I'd be SHOCKED to see the bikes return to being pre-mix.
And going back a page, I'm still with GingerSnapRacing, I know it isn't hugely complicated, I work almost solely with wiring and ECU's day in day out, but that doesn't mean I can't appreciate and be fully on board with the simplicity of a pure lightweight racing two stroke with just a carb and kickstarter... my 350 is a constant worry, is the battery gonna die, is the starter gonna pack up, etc etc.
I'm sure it'll be sweet, hopefully it'll keep some two stroke character but bring traction and raw speed and whatnot more on par with four strokes, but that doesn't mean everyone is going to be stoked on the added complexity.
The lubrication is better and you don’t have to carry a tank, pump, injector and a excess amount of oil around?
Also, I'm not so sure you can convince me the lubrication is better in a premix bike. While a poor map can cause a problem in an injected bike, it can also be done better than pre-mix by nature of how precise it is.This having been around a lot of oil injected two stroke snowmobiles pushing big HP numbers running WFO (and never losing a motor due to oiling issues).
I do dig how clever pre-mix is (simple!) but its hardly best in my book. Injection keeps stuff constant and makes for better control over your AFRs.
No way in hell do I want to deal with any of this on an MX 125. What is supposed to be an inexpensive, simple, light, easy to work on bike. All this crap is trying to solve a problem that doesn't exist.
I can't wait until the SX models are injected and I'm here for all the salt :D
Pit Row
I think at the end of the day it’s how well TPI bikes are running. If they run great, the market will reflect that. The typical things like age and condition would still be the main determinant of resale value.
Will wait and see on the tbi.
For now my yamaha 250x and my yz 125 will give me plenty of good times
"owns yz250 and yz125"
Oh
I have tried a 250 sx and a sherco 250 and loved them.
I m not a yamaha fanboy i always rode cr s abd then rm s
- fast snowmobiles are time bombs
- premix is crude, simple and light but works fine
- oil injection is more user friendly and economic but comes with a bag of extra parts
However, how does a recent TPI (or relocated to TBI) compare to a well jetted EXC? Where are the differences? Some of you guys must have ridden both?
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