Hello Dar,

My situation requires a side exhaust .61 without tuned pipe. I can run a tuned muffler (mini-pipe?), like the Ultra Thrust or Jett. I understand the MVVS .61 is a torquer as opposed to a
revver. My question is "How close to OS 91 4 stroke power can I get with the MVVS .61?"
Also, "How do I do it?"

Thanks for any help you can provide.

Jim Oliver