i recently put in stage one, it wasnt hard or anything. actualy this realy dosent have anything to do with stage one. But after i put it on my boost guage needle fell off. right now its just sittin inside of the guage. if i can put it back on where does it go when the cars off i cant remember. i think 0. i also just installed 2 12" punch p3 think the bass could have shook it off?