RIP TPI

Broseph
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Broseph
Edited Date/Time 5/19/2022 7:47am
Ok, so it’s not dead quite yet, but TM dropped it this year, KTM is moving the XC and SX line to TBI, and supposedly the XC-W will follow next year. TPI appears to have been the 4CS of fuel injection.

‘23 moto bikes:

Note the new crankcase pressure sensor. Let’s hope this one works.









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LungButter
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LungButter 4/28/2022 9:25am
4/28/2022 9:25am
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us enjoy pushing our bikes around all day doing that crap.
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BobPA
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BobPA 4/28/2022 9:29am
4/28/2022 9:29am
LungButter wrote:
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us...
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us enjoy pushing our bikes around all day doing that crap.
This right here. Looks like my 2018 carb'd 300XC is not going anywhere soon.
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agn5008
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agn5008 4/28/2022 9:31am
4/28/2022 9:31am
LungButter wrote:
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us...
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us enjoy pushing our bikes around all day doing that crap.
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m admittedly pretty stupid and still learning when it comes to the newer fuel injection bikes.
Kennyfreemoney 4/28/2022 9:44am
4/28/2022 9:44am
LungButter wrote:
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us...
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us enjoy pushing our bikes around all day doing that crap.
agn5008 wrote:
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m...
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m admittedly pretty stupid and still learning when it comes to the newer fuel injection bikes.
I don’t know what everyone’s issue is, I have a 2021 TX300 and it has the hardest bottom end hit of any 2 stroke I’ve ridden. Opened the power valve a bit, and threw on an FMF Gnarly pipe.

Other bikes I’ve riden are 2015 300XC (carb), 2017 TX300 (carb), 2017 Beta 300RR (carb), 2017 Yz250x (carb), 2006 YZ315 (carb)
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OrangeJuice158 4/28/2022 9:49am
4/28/2022 9:49am
So at a high level how does it work? Butterfly valve throttle body controls air and fuel is injected just downstream of the valve? Which goes into the crankcase and works like a normal 2 stroke from there?
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#434
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#434 4/28/2022 9:56am
4/28/2022 9:56am
Nice pics! Thx
Broseph
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Broseph 4/28/2022 9:59am
4/28/2022 9:59am
LungButter wrote:
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us...
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us enjoy pushing our bikes around all day doing that crap.
agn5008 wrote:
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m...
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m admittedly pretty stupid and still learning when it comes to the newer fuel injection bikes.
Kennyfreemoney wrote:
I don’t know what everyone’s issue is, I have a 2021 TX300 and it has the hardest bottom end hit of any 2 stroke I’ve ridden...
I don’t know what everyone’s issue is, I have a 2021 TX300 and it has the hardest bottom end hit of any 2 stroke I’ve ridden. Opened the power valve a bit, and threw on an FMF Gnarly pipe.

Other bikes I’ve riden are 2015 300XC (carb), 2017 TX300 (carb), 2017 Beta 300RR (carb), 2017 Yz250x (carb), 2006 YZ315 (carb)
Experiences vary so much with TPI that I’m convinced each bike runs differently.
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freeh
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freeh 4/28/2022 9:59am
4/28/2022 9:59am
300SX in 2023, with TBI!
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Broseph
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Broseph 4/28/2022 10:10am
4/28/2022 10:10am
#434 wrote:
Nice pics! Thx
Pics came from hard_enduro_life instagram, and it looks like he got them from someone else.
TalinH112
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TalinH112 4/28/2022 10:13am
4/28/2022 10:13am
I’ve got a 2022 250xc and I haven’t had much to complain about yet, only had a couple rides on it so far but I’m racing it next weekend so maybe some issues will develop under those conditions. 🤷🏻
LungButter
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LungButter 4/28/2022 10:15am
4/28/2022 10:15am
TalinH112 wrote:
I’ve got a 2022 250xc and I haven’t had much to complain about yet, only had a couple rides on it so far but I’m racing...
I’ve got a 2022 250xc and I haven’t had much to complain about yet, only had a couple rides on it so far but I’m racing it next weekend so maybe some issues will develop under those conditions. 🤷🏻
I haven't really run across one that runs "bad" but I've yet to ride one that ran "great".... they just always feel super anemic.

Again, some folks my enjoy that for their style of riding but it's not what I'm looking for in a 2 stroke.
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Darrin Willis
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Darrin Willis 4/28/2022 10:16am
4/28/2022 10:16am
LungButter wrote:
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us...
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us enjoy pushing our bikes around all day doing that crap.
agn5008 wrote:
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m...
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m admittedly pretty stupid and still learning when it comes to the newer fuel injection bikes.
Kennyfreemoney wrote:
I don’t know what everyone’s issue is, I have a 2021 TX300 and it has the hardest bottom end hit of any 2 stroke I’ve ridden...
I don’t know what everyone’s issue is, I have a 2021 TX300 and it has the hardest bottom end hit of any 2 stroke I’ve ridden. Opened the power valve a bit, and threw on an FMF Gnarly pipe.

Other bikes I’ve riden are 2015 300XC (carb), 2017 TX300 (carb), 2017 Beta 300RR (carb), 2017 Yz250x (carb), 2006 YZ315 (carb)
22 300ex. I run my power valve adjuster flush. Couole turns out from stock. Solid mid range hit. Not 10 year old 250sx hit but pretty decent. The bottom end is still very soft and torque y
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Markee
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Markee 4/28/2022 10:25am
4/28/2022 10:25am
They need to improve those wire connections. Little to exposed in my opinion.

Look forward to the testing and comparison with a carb model.
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gt80rider
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gt80rider 4/28/2022 10:26am
4/28/2022 10:26am Edited Date/Time 4/28/2022 10:27am
Ktm - all about making things more complicated, while reducing performance.... dudes are killing it!

Ktm - alpine marketing with sparkomatic engineering
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TalinH112
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TalinH112 4/28/2022 10:31am
4/28/2022 10:31am
TalinH112 wrote:
I’ve got a 2022 250xc and I haven’t had much to complain about yet, only had a couple rides on it so far but I’m racing...
I’ve got a 2022 250xc and I haven’t had much to complain about yet, only had a couple rides on it so far but I’m racing it next weekend so maybe some issues will develop under those conditions. 🤷🏻
LungButter wrote:
I haven't really run across one that runs "bad" but I've yet to ride one that ran "great".... they just always feel super anemic. Again, some...
I haven't really run across one that runs "bad" but I've yet to ride one that ran "great".... they just always feel super anemic.

Again, some folks my enjoy that for their style of riding but it's not what I'm looking for in a 2 stroke.
I haven’t touched the power valve but have heard that can help, I also bought this bike after being off a motorcycle for 8 years. And I came off 4 strokes for the prior 15 years before that so take my opinion at face value.
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LungButter
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LungButter 4/28/2022 10:33am
4/28/2022 10:33am
gt80rider wrote:
Ktm - all about making things more complicated, while reducing performance.... dudes are killing it!

Ktm - alpine marketing with sparkomatic engineering
Ok.
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resetjet
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resetjet 4/28/2022 10:37am
4/28/2022 10:37am
I am sure they are doing it for carb 4 compliance. The next step will be electric only. Thanks California, you suck!!!!
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agn5008
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agn5008 4/28/2022 11:09am
4/28/2022 11:09am
LungButter wrote:
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us...
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us enjoy pushing our bikes around all day doing that crap.
agn5008 wrote:
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m...
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m admittedly pretty stupid and still learning when it comes to the newer fuel injection bikes.
Kennyfreemoney wrote:
I don’t know what everyone’s issue is, I have a 2021 TX300 and it has the hardest bottom end hit of any 2 stroke I’ve ridden...
I don’t know what everyone’s issue is, I have a 2021 TX300 and it has the hardest bottom end hit of any 2 stroke I’ve ridden. Opened the power valve a bit, and threw on an FMF Gnarly pipe.

Other bikes I’ve riden are 2015 300XC (carb), 2017 TX300 (carb), 2017 Beta 300RR (carb), 2017 Yz250x (carb), 2006 YZ315 (carb)
I have about 25 hours on my 22 300XC and like I said I don’t hate it. I like it for hard enduro stuff but when I’m running at a fast pace on a more wide open regular harescramble it just doesn’t have the snap I would like it to have. It also doesn’t idle for crap so I’m getting the idle screw mod done next week. I’m hoping that helps a little. I’ll have try turning the power valve out a little more too.
Kennyfreemoney 4/28/2022 11:13am
4/28/2022 11:13am
agn5008 wrote:
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m...
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m admittedly pretty stupid and still learning when it comes to the newer fuel injection bikes.
Kennyfreemoney wrote:
I don’t know what everyone’s issue is, I have a 2021 TX300 and it has the hardest bottom end hit of any 2 stroke I’ve ridden...
I don’t know what everyone’s issue is, I have a 2021 TX300 and it has the hardest bottom end hit of any 2 stroke I’ve ridden. Opened the power valve a bit, and threw on an FMF Gnarly pipe.

Other bikes I’ve riden are 2015 300XC (carb), 2017 TX300 (carb), 2017 Beta 300RR (carb), 2017 Yz250x (carb), 2006 YZ315 (carb)
agn5008 wrote:
I have about 25 hours on my 22 300XC and like I said I don’t hate it. I like it for hard enduro stuff but when...
I have about 25 hours on my 22 300XC and like I said I don’t hate it. I like it for hard enduro stuff but when I’m running at a fast pace on a more wide open regular harescramble it just doesn’t have the snap I would like it to have. It also doesn’t idle for crap so I’m getting the idle screw mod done next week. I’m hoping that helps a little. I’ll have try turning the power valve out a little more too.
I did the idle screw mod before I even rode the bike. Air bypass screw is not a sufficient alternative. It is for fine tuning only
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langhammx
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langhammx 4/28/2022 11:29am
4/28/2022 11:29am Edited Date/Time 4/28/2022 11:54am
LungButter wrote:
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us...
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us enjoy pushing our bikes around all day doing that crap.
agn5008 wrote:
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m...
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m admittedly pretty stupid and still learning when it comes to the newer fuel injection bikes.
GET makes a relocation kit for the injectors, if you really need more snap. I have the GET Ignition/ECU, but didn’t do the relocation kit. Couple of my riding buddies have it and really like it, but my 300 runs so good, I’m not going to mess with it.
Play with your power valve, it make a big difference in power delivery. I did the Gnarly pipe and the 2.1 silencer and changed the head. The last thing I want this bike to do is hit hard like my 250 2-strokes. The 300 TPI is like having a 3-stroke IMHO
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langhammx
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langhammx 4/28/2022 11:34am
4/28/2022 11:34am
gt80rider wrote:
Ktm - all about making things more complicated, while reducing performance.... dudes are killing it!

Ktm - alpine marketing with sparkomatic engineering
I gotta be honest here. You are one of the most negative dudes on this site. Do you ever post anything positive ? I actually feel bad for you, it must be miserable living in your shoes.
I see others posting similar things to you and it got me paying attention to your posting habits and they are all right, you need to chill and try and look at the glass as being half full, instead of complaining about your half empty glass all the time. Eat a snickers…
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soggy
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soggy 4/28/2022 11:38am
4/28/2022 11:38am
langhammx wrote:
I gotta be honest here. You are one of the most negative dudes on this site. Do you ever post anything positive ? I actually feel...
I gotta be honest here. You are one of the most negative dudes on this site. Do you ever post anything positive ? I actually feel bad for you, it must be miserable living in your shoes.
I see others posting similar things to you and it got me paying attention to your posting habits and they are all right, you need to chill and try and look at the glass as being half full, instead of complaining about your half empty glass all the time. Eat a snickers…
Pretty much hit the nail on the head.
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ratonmacias
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ratonmacias 4/28/2022 11:42am
4/28/2022 11:42am
im on the fence, never liked the tpi bikes but i could definetely go to a tbi if its sportier
agn5008
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agn5008 4/28/2022 11:51am
4/28/2022 11:51am
LungButter wrote:
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us...
Hopefully this makes them run snappy like a 2 stroke should. The current TPI isn't good for anything except "Extreme Enduro" and not all of us enjoy pushing our bikes around all day doing that crap.
agn5008 wrote:
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m...
I don’t exactly hate my 2022 XC… But it is very sluggish off the bottom. Hopefully they make a kit to convert mine or something. I’m admittedly pretty stupid and still learning when it comes to the newer fuel injection bikes.
langhammx wrote:
GET makes a relocation kit for the injectors, if you really need more snap. I have the GET Ignition/ECU, but didn’t do the relocation kit. Couple...
GET makes a relocation kit for the injectors, if you really need more snap. I have the GET Ignition/ECU, but didn’t do the relocation kit. Couple of my riding buddies have it and really like it, but my 300 runs so good, I’m not going to mess with it.
Play with your power valve, it make a big difference in power delivery. I did the Gnarly pipe and the 2.1 silencer and changed the head. The last thing I want this bike to do is hit hard like my 250 2-strokes. The 300 TPI is like having a 3-stroke IMHO
I don’t want my bike to hit like a 250 either. However my last bike was a 2017 husky TE 300 and it seemed to have better low end power than my new XC which is crazy to think about since the husky was a TE. I’ll start with the idle screw mod and mess with the power valve. I’m betting those two will make it a better bike.
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clarkgray432
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clarkgray432 4/28/2022 11:53am
4/28/2022 11:53am
gt80rider wrote:
Ktm - all about making things more complicated, while reducing performance.... dudes are killing it!

Ktm - alpine marketing with sparkomatic engineering
gt80rider - all about making the dumbest comment in every thread he puts himself in

Hopefully the TBI is better. TPI was strange
4
Leeham
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Leeham 4/28/2022 12:12pm
4/28/2022 12:12pm
If the performance is solid and no big setbacks. Might have to pick up a 23/24 125.
Rickyisms
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Rickyisms 4/28/2022 12:17pm
4/28/2022 12:17pm
I appreciate the technological advancement with TPI and now TBI, but there’s something special about a carb to me. I always thought it’s a rewarding feeling starting out with a bike that runs like crap and swapping some brass to make it run like a brand new bike.
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sandhills
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sandhills 4/28/2022 1:13pm
4/28/2022 1:13pm
resetjet wrote:
I am sure they are doing it for carb 4 compliance. The next step will be electric only. Thanks California, you suck!!!!
TBI would not improve emissions, it's a crankcase charge so it will come with all the short circuiting of a carbureted bike.
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sandhills
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sandhills 4/28/2022 1:17pm
4/28/2022 1:17pm
Anybody spot an oil injector? TBI could potentially run on premix if they wanted it to.

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