> I want to put a full LRD Pro4 Series exhaust on my 06' z400 with a K&N
> filter, with the airbox lid removed. I was wondering if any one has
> this same setup or something similar. What size main jet would you
> start with?
>
> Thanks!
> Octo
Check out z400central.com. You'll find a lot of things there.
But, I'd say using Mikuni jets 155-160 should be good. 25 pilot, middle
clip on the needed.