The idea of having everything already figured out was why the zzp kit appealed to me. When I contacted them however they keep trying to get me to buy more and more. I was planning on going with the z3 kit, 3" catback, 60# injectors, and make my own air/air intercooler. I was told by customer support that I would only be making very low 300whp, which didn't seem right. I couldn't justify the point of spending close to 5k and barely breaking the 300 mark.