GReddy Boost Cut Controllers (BCC) allows the factory ECU limiters (or "fuel cut") to be eliminated electronically, by wiring the unit directly into the factory ECU harness. The Speed Cut Controller (SCC) eliminates factory speed cut off for most Nissans and Toyotas. An added feature for the SCC is it speed trigger feature that can be used to initiate switch (similar to our RSS) via a desired speed.