I had a bike with DG pipes, stock silencers, K&N pods and used Mossbarger reed cages.. and I could barely get the thing going with 27.5 pilots.. I put the air screws to 1 turn out and its alot better but it could use a 30 pilot. And this was after I did a leak down.. I still can't figure out why this thing needs a 30 pilot.... I guess it just goes to show ya that every bike is different.