Originally Posted by rcdash

Good tune or not, you will be exerting more stress on the rods (obviously a better tune will minimize this increase). You may have a "lucky" set of rods, but you're running them over spec already. You are shortening their lifespan -no way to know by how much exactly... Some people get away with tens of thousands of miles, others just hundreds at xxx whp. Metal fatigue is a stochastic process and is cumulative. In other words, it is unpredictable, and stress incurred at high boost is not reversible by turning the boost back down. A rod might let go at low boost at virtually no load if it has finally reached its cumulative limit of stress it can handle.

Sharif's recommendation to only occasionally bump up the boost when "needed" is a great way to minimize the chance of failure if you decide to go for it. Good luck.