I was thinking of getting vforce delta 2 reed valve for my blaster and i wondering will i have to re jet my carb? and how much hp gain will there be?

 

Don't fret the jet!!! Jetting isn't hard. Your intake velocity will be higher with the V-force which will require a smaller jet. However, your bike is jetted rich from the factory so you probably won't have to change anything. Especially if you have not changed the airbox. Jetting is not hard anyway.

Don't worry about the 1HP you gain from each part. Your throttle response and lower end power will be better. If you have the cash, buy the stuff and even though 1 HP doesn't sound like much, when you put all the parts together it adds up.