The controlled combustion feature enables the engine to run with higher compression ratio to deliver greater power and efficiency. (thesupercars.org)
With higher compression generally comes more power, meaning that the new 4.8 L could well outperform the 5.0, despite its slightly smaller displacement. (fordauthority.com)
Why will a lower compression ratio engine push the compression gauge to a higher number than a high performance, high compression engine? (mechanics.stackexchange.com)