1976 Yamaha rd400 air filter

[tpl]

Hi guys.
I have an all stock 1976 RD400 and I am going to put a Y boot with a K&N filter on it.
What jetting changes do I need to make if any?
Thanks!
Todd

[NYSingh]

You can take a look at the jetting poll for ideas:

https://docs.google.com/spreadsheets/d/1T9KaGS9cCZbq9JfwybwA-co3t1NmSuT4D0GfrSjBrJs/edit?usp=sharing

and submit an entry yourself to help others:
https://forms.gle/WWjCHhmdfmozznhWA