Hi Robin
First sorry my english !!
I have a suzuki 9,9bs. I read what you did with yours but I'm not sure to
Understand.
You only need to change the restrictor to have more air ? Just with that you have a 15cv ? It would be so cool !!
I don't understand what is "prop" 10"or 11"..
If you can help it could be really kind from you.
Thanks from France