Couple of myths that need to be dispelled.
Longer inlets do NOT create higher port velocity unless they are correctly sized and tapered. Increase length equates to more drag and less flow.
Carbs are not as good at creating a fine mist as to a good (modern) EFI system with multiple small discharge holes.
EFI does not inject when the valve is open. Even sequential systems can rarely inject enough fuel at high RPMs when the valve is open. They just fire often enough to work and that includes firing into the port or onto the back of the valve when it's closed.
Twin carbs typically make more power than a single carb all other things being equal but the difference isn't always large on a mild machine. Remember Triumph TR6 and T120. Single carb TR6 wasn't as fast as the T120 on the street but not a big difference. In a race bike that situation is different but on a mild mannered bike, not an issue. That's on a 360 degree crank.
With a 360 degree cam the carb can be stock sized or one size larger. Changing from 2 CV carbs to a large VM slide carb would be a significant difference. CV crabs only flow about 85% of the same size slide carb.
On a 180 degree cranks things are less simple.
Longer inlets do NOT create higher port velocity unless they are correctly sized and tapered. Increase length equates to more drag and less flow.
Carbs are not as good at creating a fine mist as to a good (modern) EFI system with multiple small discharge holes.
EFI does not inject when the valve is open. Even sequential systems can rarely inject enough fuel at high RPMs when the valve is open. They just fire often enough to work and that includes firing into the port or onto the back of the valve when it's closed.
Twin carbs typically make more power than a single carb all other things being equal but the difference isn't always large on a mild machine. Remember Triumph TR6 and T120. Single carb TR6 wasn't as fast as the T120 on the street but not a big difference. In a race bike that situation is different but on a mild mannered bike, not an issue. That's on a 360 degree crank.
With a 360 degree cam the carb can be stock sized or one size larger. Changing from 2 CV carbs to a large VM slide carb would be a significant difference. CV crabs only flow about 85% of the same size slide carb.
On a 180 degree cranks things are less simple.