so i am about to put on my ported blower with my 60# injectors, and BAP. my question is, is the 4lb lower setup necessary. right now my car makes just shy of 500/500 with a pulley, full exhaust, and a larger heat exchanger. im not looking to compete with guys that have twin screws, but my question is, will the 4lb lower make enough difference that ill wish i did it after i get another tune. an comments are greatly appreciated