im new to this site but have been ridind banshees for years. you said sluggish off the start,,,,,first problem right there,,,a bone stock banshee off the start revved correctly and let loose in the powerband will not be sluggish at all,,,it should scream and kill any stock 400 out there,,,,im not tryin do down you at all cause for one, im new here and for another some do on this site to newbies(no offense but true), either your shee runs like shit or you dont know how to ride,,,,again,,,no offense.......what do you mean when you say sluggish? i got a 410 stroker right now but my previous banshee had a stock motor with pipes only and off the start, revved and go, there should be no (sluggishness) at all.....just my 02.cents,,,anyone disagree?