bar and you will get your answer (seriously). Boost jets are basically a boost controller and they are explained on this site. If you buy a new ECU with and EPROM (chip) then I would recommend JWT. Jim Wolf Technologies does not play around when it comes to the Z and they have been making and selling EPROM's for a very long time. I think you are on the right track as far as getting a intake, exhaust, and ECU. My recommendations would be a JWT POP charger (intake), SZ exhaust (if you can afford it), along with a JWT ECU.
Welcome to the site and good luck but I am sure you have noticed parts are and will be expensive for a TTZ. Congrats on the purchase.