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Burger Motorsports JB4 tuner for your 23+ Z. Just moved across the country and unfortunately had to sell my Z. This turned it into a MONSTER. Plug and play. I also added the Bluetooth dongle so you can tune from your phone. Also sends maps real time to your phone. Will ship if necessary. Call or...

Hey all, Just installed the JB4. Ran the default map to see how it would go. ( Map 1 = 4psi ). Definitely a big bump in the butt dyno. I plan on staying on pump gas. Either 93/94 octane. So map 3 (5.5psi ) will be the biggest gain I'll get. It's def worth the $750. Especially since you can...