I rejeted my viny again and I am very pleased. The dynojet kit doesnt come with any more pilot jets. They say you dont need them but you do. I have the K&N and stock pipe with the sparky out. I had to go one size bigger than the recommend on main jet and one size on the pilot. I put the HMF pipe on for 2 rides and decided to take it off. It wasnt much louder than the stock pipe without the sparky but I wanted to be quitier. When I want to be loud I take the raptor. I almost didnt take it off because of the great power it made. If anyone is interested in it let me know.

 

how does your vinny do w/ only rejetting? what size jet(S) did you use? i've always heard to re-jet means to re-pipe also. which model HMF did you use? considering jetting and piping myself for more LOW end ! how far are you from Elkin, NC? ( i'm about an hour N of Charlotte on I-77)

 

Also, i hear you can modify the stock exhaust. How do you do that w/o messing it and the engine up? by the way, i have an '05 vinny auto.

 

I live in Ashe next to boone. Its the HMF with the quite core. You have 3 different options straight thru just the sparky or quite core. I did loose some power when I took it back off but I needed to be quiter. Dad rides with me sometimes and we work with it and he didnt like it at all. Like I said its not to much louder with the quite core. Plus when I want be loud or wilder I take the raptor.

 

You pull the spark arrestor out. You can do air box mods. I have seen antime that you do anything to the flow of air you need to rejet. Even after I was done with mine I had the airbox lid off and it wouldnt run for crap. If noise isnt a issue and your not going to be in deep water you could make these things alot more powerful.

 

how do you get the arrestor out? do you need any special tools?

 

Depends on the year. The 04 and up have a screw at the bottom end of the pipe and the others have 3 nuts on the end. You take the screw or nuts out and take some pliers and wiggle and pull it out. Did you get the message I sent you?