The BRC Sequent 56 is an LPG/CNG sequential injection controller. Unlike older "open-loop" systems, the Sequent 56 works in parallel with your vehicle’s original ECU, intercepting petrol injector signals and adjusting gas injector timing. To do this correctly, you must calibrate the system to your specific engine.
Without this software, you cannot properly tune the Sequent 56. Driving with an uncalibrated system can lead to poor fuel economy, rough idle, backfires, or even engine damage. brc sequent 56 software download