step1
Supercharged
Im fitting kn underseat filter.If i remove the underseat ducting as well .will it have to have a retune.Its already set up for cat removal so i dont expect itll need it but better be safe than sorry.Any problems occured due to ducting removal.Yes yes i know about tuneboy but am skint at the minute.Thatll be me winter project at the minute i just want to ride the thing. 
