There's no reason to install a blow off valve. If you don't know the intricacies of them...don't mess with em. I don't know much about em and I'm sure not going to mess with one unless the following two things would ever happen:
1. I know that I did in fact need one for performance purposes
2. I know exactly how to set it up properly.
Since neither condition is satisfied, I'd spend the money elsewhere.
