(Ignition Controller for Carburated LS2/LS7, Not legal for use on pollution controlled vehicles.) Features:*Runs a carbureted LS2 engine without complicated EFI hardware *Map a timing curve using Pro-Data+ software *Programmable two-step rev limiter, vacuum advance curve and step retard *Direct plug-in to factory components *Programmable via a PC through MSD s Pro-Data+ software. While it may seem blasphemous to some, putting a carburetor on a GM Gen-III V-8 is a great option for those wanting the advantages of the aluminum small block without the headaches of wiring a modern EFI system. The 6LS-2 Controller allows you to map a timing advance curve with MSD s easy-to-use Pro-Data+ software. Other programmable features include a two-step rev limiter, a vacuum advance curve for cruising economy and even a step retard in case you want to add a little nitrous to the mix.The 6LS-2 is designed specifically for the LS2 and its 58-tooth wheel, which can be easily recognized by its gray harness connector. This compact ignition controller is fit with matching factory connectors for a direct installation. Only a handful of connections are required; the coils, crank sensor, MAP sensor and the cam sensor. You ll have your carb ed LS2 running in no time!