I just bought a 2012 370z 6 speed manual, has most common bolt ons like CAI, Test pipes, ARC Catback, etc.... Came across a thread here about a "Sprint Booster" and was wondering if this is a worthwhile upgrade or just save the 250$ and put it into a dyno tune at Z1 Motorsports (they are 5 mins from my house
) Thanks for any opinion you may have...