Sometimes the bias can be tweaked toward the intake side with higher ratio rockers (but this generally doesn't work on the exhaust side, which is more heavily dependent on the XO opening point than lift).

As I have posted before, the only reason why manufacturers use the same lobe and rocker on both valves is: it's the cheapest way. They try to get the ports to work that way even if it's not particularly efficient.
The function of the two ports (gas speed, temperature, pressure) is as different as chalk and cheese, and their needs for an event are very different.

The say on whether dual pattern will help should be your porter as the final analyst of the relative port capacities.


Boffin Emeritus