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The JB4 Tuning Box from ScienceofSpeed allows you to extract 40-100 horsepower gains from your NSX! By intercepting engine pressure sensors and monitoring engine parameters through the factory CAN bus - the JB4 Tuning Box intelligently increases engine output while maintaining the factory ECU's fuel, ignition, and engine safety strategies.
The JB4 Tuning Box increases horsepower by 40 to over 100 horsepower depending on the type of fuel used. 91 octane produces 40 horsepower gains, 93 octane 60 horsepower, and 98 octane+ over 100 horsepower. This is on top of the gains achieved with ScienceofSpeed Sport Downpipes, our first recommended modification on the Second Generation NSX. The JB4 integrates to the upcoming ScienceofSpeed Liquid Injection System - which adds boost based on liquid injection flow allowing 91 or 93 octane to be used with similar to 98+ power gains. By monitoring the CAN bus data from the ECU, the JB4 module will intelligently increase power only when the engine is up to operating temperature - and progressively adds increased power as the throttle is increased. Performance results were achieved with ScienceofSpeed Sport Downpipes and factory exhaust.
The JB4 module is installed in the engine bay in a sealed enclosure and includes a plug-and-play wire harness developed and manufactured by ScienceofSpeed. All connections to the factory wire harness use factory style connectors. The system is fully plug-and-play with no cutting of wires required. Once installed, the wire harness cleanly integrates to the factory engine bay wire harness and the JB4 unit is hidden from view.
change maps, monitor, and log performance data:
The JB4 from ScienceofSpeed includes Bluetooth connectivity. With the optional JB4 app for Apple and Android devices, you can switch maps for fuel and monitor and log performance data.