B-pipe & MSD question

How do you guys know if your b-pipe is tuned in really good, i like to ride surf and do freestyle and mainly lookin for low end. What would be the easiest way to dial in the pipe? Also im adding MSD ign. to my ski what would you recommend i set the RPMs at, i have a pretty close to stock motor.
 
i typically set mine to :

bottom - closed
middle - closed
top - 1 turn out

also, i crank my limiter all the way up and let the throttle be the limiter.
 
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