Peak cyl pressure can be changed with timing. The problem is with a N/A engine, you are against a wall with timing needs. A N/A engine can only make so much power at MBT... then you're done. Now you want more power, throw some timing at it. It makes more power, less tq. When tq starts dropping, it's because the engine is fighting itself. You're "storing" energy at tdc, and when the crank rotates far enough to use that energy, it does so immediately. Thats where the power comes from.
With a turbo, you can tune for MBT, and if the power isn't what you want- then throw some more boost at it.
Load dependent timing is what makes engines live. My low dollar bottom end made WAAAAAAY more power on pump gas than most "race" builds make on race fuel.
Keep the crank rolling forward!