I just got my 03 350z track edition

It came with quite a few mods and injen intake long tube headers aftermarket exhaust Greddy E manage Ecu kintex manifold with throttle body spacer

What in trying to get at is how much power is this giving my car? How do I know what the Greddy Ecu is running and where is a place in so cal to get my car tuned so all my mods can work together also

What else can I buy to give my 350z more power?

 

Welcome to the forum the search feature is quite useful here and

 

I would start with finding out from the prior owner. Ask him who did the tuning work.