How to install Harley m8 Injectors. 5.5 fuel moto injectors for more horsepower. 2017-2024

showing how to install fuel moto 5.5 fuel injectors on 2019 Harley m8 114. I can't believe the power increase. Best upgrade you can do for your Milwaukee 8

[@timblackburne77]

As a tuner of fuel injection systems, I am calling bs on this. What people like you need to understand is a thing called duty cycle. An injector can not exceed 100% duty cycle as that is full open. While tuning, if you reach this point then larger injectors are required, otherwise the injector can't supply enough fuel and the fuel mixture starts to lean out.
On a stage 1 or 2 set up, the standard size injectors do not reach 100% duty cycle and are therefore perfectly fine. If you increase displacement or add boost, yes, you will need larger injectors to cope with the increaced volumetric efficiency. Putting larger injectors on a stage 1 set up is like putting a massive holley on a small v8. And, to add to the troubles, injectors need to be in the upper range of duty cycle to atomise the fuel properly, so if you fit larger injectors but don't need them, the fuel spray pattern is terrible and you lose fuel economy and power in the lower rpm and load situations.
Lastly, if you do fit larger injectors to any fuel injection system, tuning is 100% required. You can't just fit them and ride off into the sunset as the ecu is injecting for smaller injectors, not larger ones so you engine will be running rich as hell. Pull out the spark plugs after 100 miles and tell me I'm wrong.

[@Hey_You_Me]

I messed up an injector and was stranded and ordered cheap replacement off Amazon. Should I dump then 150 into injectors ? My bike is running fine right now.

[@HarleyJewRider]

Thanks for making this video, I need to swap my injectors and was thinking I’ve have to take the intake off. Good to know we don’t have to.

[@thevinylvillain2797]

Did you have to change your tuning for the new injectors?

[@RagnorLothbrook-f7e]

Great video!!

[@jasonharper61]

Did you ever find an answer as to why they rotate? Just got mine and they do the same thing

[@ChanceChelios]

Gmr performance in Fort Worth installs a billet aluminum intake manifold is using 6.2 injectors with the fuel moto bmf breather with stick heads and cylinders in his stage 2 kits an omg it does a number on hp / torque!!

[@brandonmashburn7707]

You use the TAB header and slip-ons?

[@robertgwinn8406]

I have 2015 street 750 time to change injectors. Thanks for sharing