The DragonFire Auto Tuner is an "add on" accessory that can be used with any of our PyroPak ECu controllers. It connects to the PyroPak with a single cable and requires only a ground and +12 volt connection to install. If your exhaust does not already have one, a "weld in" O2 sensor bung is included with the kit. This system takes virtually the same technology that Tuning Link dynamometer software (for automated Dyno tuning) uses, along with wide band O2 sensors and is designed to be used on your Side-X-Side to automatically tune and apply the settings for you on your PyroPak. Dual channel setup which tunes each cylinder separately.. NOTE: This auto tuner will only work in conjunction with a PyroPak ignition controller (i.e. you must already have a PyroPak ignition controller to use this setup). WARNING: Do NOT use with leaded race fuels