Top 10 KTM TPI Myths BUSTED | 2 Stroke Dirt Bikes

and now it's time for the top 10 ktm tpi myths and misc misconceptions say that five times fast so after i did that recent video on the top 10 dirt bike myths i had a ton of people reaching out to me and saying hey why don't you do a top 10 ktm tpi mitts so that's what we're going to do in this video let's start here with myth number 10. it's that they all run too lean well it's true that they run a little bit more fuel lean than what we've traditionally traditionally done with carburetors that doesn't necessarily mean that they're too lean the thing you have to remember is when the rpms are low on these bikes they're using very little oil and very little fuel so you don't usually get that drizzle of oil coming out of a tpi bike but that doesn't mean it's too lean it's more of a sign of efficiency i mean look on on this i've actually got a quite a bit of oil here on my silencer on this tpi bike myth number nine has to do with your power valve right here see there's a lot of people that think if you tune that make any changes to it the bike's gonna blow up or not run right or something now i've personally had about 15 of these bikes and i've ridden over two dozen of them and most of them i actually have tuned a little bit here on the powerball not not like a drastic amount the point here is you're tuning it and it doesn't make the bike blow up i can tune the bike to my liking and i do that one of the ways i do that is by adjusting this power valve on many of them now if kt if it was that big of a deal ktm would have redesigned this cover so that you can't change it or they would have glued it in or just done something else so i know they're not that concerned with it because they didn't change the design of this thing one iota for the last like 20 years so that one's a myth myth number eight is that tpi bikes aren't reliable so let's just kind of break this down for a second a 2021 like this one is the fourth model year they've been doing this and we've got the 2022s coming out right around the corner so that's five years of tpi bikes just in my little teeny circle of riders we've got around 2 000 hours of motor time on these tpi bikes and let me tell you other than like some leaky like power valve covers and maybe a split hose or two from our radiator which are not tpi problems the worst thing we've had happen to us is one blown fuse and the fuse was right there that a spare fuse was right there two spare fuses was right there in the fuse block so i don't believe i'm not going to go and say that it's okay to just say like they're not reliable they are just as reliable as any other bikes and if you think if you want to talk about complications because yes it's a little bit more complicated your fuel injected four stroke is an order of magnitude more complicated than a fuel-injected two-stroke they are reliable wanted to bust that myth myth number seven is that you have to replace the oil pump for the tpi system every 80 hours now that comes from these manuals here ktm manual is their service schedule because they recommend that you do a top end at 80 hours how many of you were actually doing it up in the 80 hours anyway the guys that i ride with we're going 100 150 200 hours on top end changes now it's not going to be a it's not going to be a bad idea to do a top end change at 80 hours and change your oil pump at that time but just let's put some things in context i pulled out some things because if you're going to go letter of the law on that oil pump then it means you're going to have to do letter of law on some of these other things which is and i pulled this straight from the manual service the fork every 10 hours do you guys do that do you service the shock every 20 hours do you change all engine bearings every 80 hours do you change the spark plug every 20 hours oh and here's a bonus one it was either on my yamaha or my kawasaki it said you were supposed to replace the piston every 12 hours on that four stroke so yes the manuals are a little conservative change it at 80 hours if you want last year i put 125 hours on one of my tbi pumps uh tyler went 185 hours on his tpi oil pump and rich went 250 hours on his pump i also know another guy that went 300 hours on his tpi pump last year didn't break so you don't have to replace it every 80 hours or it's gonna blow up that's a myth myth number six is that the tpi bikes don't have any low end power now i came up to my 300 because i just want to look straight in the camera and say they have a ton of power the power is just different than that that you'd feel on a carburetor it's not that there's less of it it's just the power delivery is different the power on the tpi bike even the counterbalance ktms is just more linear across the board and doesn't have that same type of a feeling that you might have felt on your on your uh your carbureted bikes but when i'm doing the nastier and nastier stuff that i've been doing more and more and more over the years the thought that oh man i wish i had more power has never entered my mind and it certainly never crossed my lips these bikes have a ton of low end power that's a big myth that we need to bust right now myth number five tpi bikes take too long to start well i will admit that back in 2018 the first early model some of those were a little bit slower starting now in 2020 and 2021 and even 2022 these bikes are starting lightning fast in fact here is a 2021 250xcw that i haven't even done any tuning on and it fires up instantaneously the myth that these things don't start quick that's a myth because they do in fact the slowest starting tpi bike i've ever had actually had an aftermarket ecu on it more on that later myth number four is that there's not enough oil in that cylinder or in that crank when you start this thing up because somehow like the oil is evaporating or there just wasn't enough in there see there are some people that have purported that you need to run a little bit of oil in your fuel so that there's enough oil inside you know in your top end and in your bottom end and your crank so that everything has enough oil to lubricate in there here's the thing the three or four times i've seen these engines pulled apart there's a ton of oil in there now you can either take my word for it and you can take ktm's word for it or you could test this yourself you could leave your bike sitting for 30 or 60 days and then tear it all down and see if there's oil on those surfaces or you could just trust me because there is that is a myth you don't need to put oil in your fuel in order to keep this thing from blowing up myth number three is that all of these tpi bikes come running perfectly right out of the box similar to an efi four stroke now it's true that a lot of them do come running basically nearly perfect but not all of them do and they do need to be tuned to your liking not tuned necessarily to a certain standard but tuned to your liking and that might mean that you need to adjust the air bypass screw over on the other side to get the kind of bike the bike to kind of run best in the low rpms so this is your air bypass screw it's not a it's not an idle screw adjustment you might need to adjust your power valve right here to kind of get that snap that you want you might have to install an idle screw in the throttle body so that you can adjust the idle independently of that air bypass screw over on the other side and also you might need to try a different throttle cam in your throttle to kind of get the exact response that you want out of the bike point is they don't all run the same they don't all run perfectly and they do require some tuning so i wanted to bust them in that they're all just perfect right away myth number two is that ktm went to tpi because it's better than carburetors that is just a big myth they did not go to tpi because it's better they went to tpi because they had to see the euro 4 and the euro 5 emissions standards in europe were being forced upon them because of the number of units that they were making this didn't affect shurco and it didn't affect beta but affected ktm and they either had to comply and make their bikes more euro friendly more emission friendly or they had to stop making them and stop selling them so i'm glad that they went and developed the tpi technology so they could continue to make two strokes and continue to give us these amazing bikes but it's not because it's better than carburetors there are pros and cons to both and now for the top myth is that you have to have an aftermarket ecu in order to make your pike run properly here's the deal this is a brand new ecu for a bike that i'm using for a different project and i have actually run days where i've had aftermarket ecu's in my backpack and swapped them back and forth to see how they run i have tested things like get ecus we've tested kubra ecu's but he's got the coober ecu on this bike and i can tell it's i think it's running a little i have a ton of buddies that run like the tsp performance ecu's and the aftermarket ecu's are different than the stock ecu but they're not always better than than the stock ecu just because you don't like the way this runs doesn't mean that it isn't running properly it runs very very good in fact my 2020s and the three 20 22s have all run absolutely stellar amazing so don't feel like the the myth out there that you have to spend 500 or a thousand dollars or 1300 on an aftermarket ecu and head and all these different upgrades to make your bike run properly that is a total myth these things run like screaming eagles on the stock ecu's if you want something different that's cool but don't spread the myth that this one runs like crap because the truth is if your bike runs like crap it's probably not related to your ecu and it's to some other unrelated problem hey everybody i'm actually building a text message list if you want to get text messages from dirt bike channel on your phone direct 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Channel: Dirt Bike Channel

Views: 52,134

Rating: 4.9494815 out of 5

Keywords: enduro, motocross, dirtbike, ktm 2016, ktm motorcycles, shootout, ktm, range, erzberg, graham jarvis, johnny walker, best dirtbike, 125, 200, 250, 300, 350, 400, 450, 500, 525, exc, sx, how to, 2 stroke, 4 stroke, video, review, ktm, husqvarna

Id: ei5-jOymndw

Length: 11min 4sec (664 seconds)

Published: Tue Apr 27 2021