For built LS engines that require a little more attention, plug your laptop in to program a timing curve and rev limiter with the user friendly MSD View software. Supply the unit with power and ground and you're off to the races! CT525 crate engines and built LS mills alike need a way to control 8 coils, RPM and timing. The 6014CT makes this easy with factory connectors that plug directly into the LS cam sensor, crank sensor and coils. If running a CT525 a preset timing curve and rev limiter setup is preprogrammed.