This is a 993cc Briggs V-twin with a closed loop EFI and port injection. This video was before any computer tuning was done. The acceleration is insanely quick compared to the carb engine.
Below is a video of the engine mounted on my boat with a cabin, running on the Chena river. It even started when it was 27 degrees Fahrenheit!
2430 McGonnell Way
North Pole, AK 99705
Phone: (907) 322-6275