Troubleshooting a 424 error on a Bully Dog GT tuner for Nissan/Infinity vehicles:
This is a security error, mostly caused by low and/or fluctuating voltage at the ECM.
If this happens, disconnect the tuner and hook a battery charger up to the vehicle's battery with 10+ amps and retry the download. If the problem persists please contact our technical support by clicking on the Contact Support button below.
