Sputter

[José A]

I have a 98 banshee 65mm top end with cpi cylinders, billet head,22cc domes, vforce 4 reeds billet intake stock carbs 25 pilot and 280 main with fmf pipes and silencers air pods and she sputters on low end but after half throttle and beyond it’s good on the top end how do I get ride of the bottom end sputter 

[dano3]

Depending on temp/altitude you likely need a 27.5 pilot. would swap those in, set air screws at 1.5 turns out and see how it is.