Which retard function is used in nitrous oxide and boost applications to activate the retard function?

• A. Tuning software
• B. Launch retard
• C. Step retard
• D. Individual cylinder timing

Answer: (C)

When you add nitrous or boost, the engine can detonate if timing isn’t adjusted. The step retard function is designed to pull ignition timing in stages as nitrous comes on or boost increases, giving you a controlled reduction in timing rather than a sudden or blanket change. This stepped approach lets the engine stay safe while still allowing the extra air to produce more power. It’s typically tied to the nitrous activation or a boost threshold, so timing is retarded only when those systems are delivering extra air. Other options don’t describe this on-demand, staged timing adjustment: launch retard is mainly for the initial launch phase, individual cylinder timing is a per-cylinder map capability, and tuning software is the programming tool rather than the specific retard method.