In motorcycling you can get cams that change the firing order and time from a traditional 1,3,4,2. It's was very common in American road racing in the 1990's to hear 4 Cylinder engines that sounded like two cylinder v-twins.
The way these guys did it and ultimately popularized this configuration for awhile was to essentially cut the cams in half at the center and rotate one side 180 degrees and weld them back together. This first try wasn't reliable for obvious reasons but you know how racers are and what they will do to get an advantage.
This configuration became known as the big bang engine. On a 180 degree crank 1 and 4 would fire at the same time and 2 and 3 would then fire at the same time 180 degrees later in the rotation. This allowed for v-twin low end torque numbers to increase (big debate on that actually) AND since it was a well balanced 4 cylinder engine it would still get those incredible rev's up in the 12,000 plus range.
The primary objective for this config is the bottom end power curve is much steeper and levels off earlier to peak horsepower. It makes the motor feel like a two stroke in many ways.
Since that time I've built a couple of these engines with cams that are now available, a bit rare, but available. I can tell you they're super fun and sound awesome.
Finally, onto my question
Do any of the four cylinder car guys out there run this configuration?
If they do, what would they call those cams?
In particular, I'm really curious, are there any similar solutions for Subaru platforms like the 2008 or 2009 WRX Boxer motor?
I consider myself a pretty good googler but when it comes to finding car mod solutions I fall in a hole and frankly many of the sites out there offering components are klugy and poorly put together using fancy terminology that my motorcycle brain doesn't comprehend. Any help will be greatly appreciated.
Here are some linkss regarding this and similar configurations with motorcycles.
This is similar but it is done at the crank. It's called a crossplane crankshaft where the offset journals are at every 90 degrees. Chevy uses a crossplane configuration in many of it's ICE platforms.
Another good explanation, this one really nails it and breaks down the big bang engine.