The dual angle injectors have been around for at least 10 years now. I assume most cars on the road already had them. A lot of people driving older bmws are switching their single pintle style EFI injectors to disk type 4 hole injectors. For cars with Bosch components, its a drop in replacement.
Left EV6 20# injector from a 2000 GM/Opel vs right EV1 injector from a 1991 bmw
The 4 holes in the injector nozzle are cut with a lazer which can be set at any angle the manufacturer requires. The injector can be optimized for the specific port design my the angle the laser is set for each of the 4 holes. Most people converting to these injectors report a very slight reduction in fuel consumption. The only trick is to find a donor that has the same size injectors and similar port design to your vehicle. A lot of these injectors are starting to show up in the JYs.
More info on specific Bosch injector nozzle spray patterns.
Bosch Motorsport - Injection Valves
