just bought bike has V+H big radius no fuel management controller. a little bit of backfire and a lot of vibration on deceleration other wise bike runs fine. pipes were put on by h-d dealership said it wuod be ok without. any thoughts on this? should i put fuel system on? had user cobra and V+H fuel system on my 2007 sportster with pipes and high flow air filter and seems like it just isnt set up rite. if i had to add controller whats the best?

 

Just put a Big Radius 2-1, Drak cleaner and fuelpak on my 08 Fatbob. The instructions strongly suggest a fuelpak when you add the high cap aircleaner, the inference being that with just pipes it (fuelpak) is not necessary. My additions made, by the seat of pants feel, considerable more torque and power, not to mention sound! IMHO, go for the high flow filter with fuelpak since you already have the pipes!