Has any one used this? Since I was going to have my carb rejetted I was considering it. Any comments on is it worth $85-90 or is there something else better?

 

I ran a yost power tube in my 92 softail in the S&S carb and to be honest with you I felt little difference if any on my bike but every bike is different I guess.

 

ditto on my 71 shovel[&:]

 

Had a Yost on my 95 Roadking, and a friend of mine had a one size larger slow jet, an 87 Sportster needle, and two coils cut off of the slide spring. His ran just as good as mine, and only cost him about 20.00. In my opinion the Yost is not worth it.

Regards,

Bill

 

On an EVO use a #45 low speed jet and the stock main jet, you will feel a difference. There are two needles that come with it, I think the blue one is the one you want, the red one uses way too much gas.
I've used them on several bikes and they are as good as a Dynojet kit.

DC.

 

The guy at the parts counter didn't really think they were worth the trouble.