well get the aem kit, i actually got the one zzp sells on black friday, the aem kit is the only 1 that is 100 percent methanol safe, which i always run blue washer fluid with is around a 50/50 mix, but you know you arent going to blow out a seal or something. it does not have a sophisticated controller just a setting for what psi to start spraying and what psi to be spraying 100 percent at, and then it is a linear progression from there. and our m90 hits full boost almost instantly, so no need for all that devils own 400 dollar computer nonsense... plus it comes with enough house and stuff to mount it in your trunk... another benefit is it cleans your whole top end as you spray...
Nah I'm thinking more along the lines of a home made kit or the kit sold by Devils Own.