Nissan Z JB4 tune closes dyno gap
- Burger Motorsports posted a fresh Nissan Z dyno video today, showing its JB4 piggyback tune and basic bolt-ons pushing the VR30 much closer to Supra territory. - The key hook is cost and claim: BMS sells the 2023+ Z JB4 for $679 and advertises gains up to 100 whp and 120 lb-ft. - That matters because the Z starts at 400 hp while the current GR Supra 3.0 makes 382 hp, so tuning shifts the value argument.
A Nissan Z dyno chart is making the rounds because it hits a nerve in modern tuner culture — how much speed can you buy without opening the engine or flashing the factory ECU? Burger Motorsports dropped a new video today showing a 2023+ Z on its dyno before and after JB4 tuning, and the whole point was simple: the Z’s VR30 twin-turbo V6 responds hard to basic mods. ### What actually got posted? Burger Motorsports published a “before and after” dyno video for the Nissan Z and paired it with the company’s product page for the 2023+ Z JB4. The package is a plug-and-play piggyback tuner, not a full ECU rewrite, and BMS pitches it as a reversible setup with app control, datalogging, map switching, and support for different fuel blends. ### Why does the Z matter here? The Nissan Z already comes with a strong base engine — Nissan’s 3.0-liter twin-turbo VR30 rated at 400 hp in the standard car, or 420 hp in the NISMO. That matters because the tuning story is not about waking up a weak platform. It’s about squeezing a lot more from an engine that was already sold as the value play in this segment. ### And why keep bringing up the Supra? Because the GR Supra has become the benchmark for “easy turbo six-cylinder power.” Toyota’s current 3.0 model uses BMW’s B58 inline-six and is rated at 382 hp and 368 lb-ft. In enthusiast circles, the B58 has a reputation for taking bolt-ons and tuning extremely well, so any Z dyno that narrows that gap gets attention fast. ### So what is JB4 doing? Basically, JB4 intercepts and adjusts boost-control signals while still leaning on the factory ECU for timing and fueling decisions. BMS says the Z kit connects to two sensors in the engine bay, adds OBDII CAN integration, and can support ethanol blends, boost-by-gear control, code reading, and logging on the Nissan Z. ### Why are people calling it “cost-effective”? Because the sticker is right there — $679 on the current product page. That is cheap by modern forced-induction tuning standards, especially compared with deeper hardware changes or a full custom calibration path. Forum posts from Z owners also show why piggybacks stay popular: quick installation without fully committing the car to one setup. ### What’s the catch? Dyno charts are useful, but they are not universal truth. Different dynos read differently, weather matters, fuel quality matters, and a “before and after” test on one car is best read as proof of response, not a guaranteed number. Even Supra owners say the same thing in JB4 threads — the gain over that car’s own baseline matters more than headline wheel horsepower from one machine. ###
