Which is better for a street car, a semi pp or a half bridge? I would guess the semi pp as there is no added wear to the engine unlike the half bridge. While they both achieve similar outcomes?

Would the semi pp buck less?

 

Full bridge.


I have done full peripheral, half bridge, 1/3rd and 2/3rd bridge on 6 port, and full bridge. They all have the same drivability.

Bridge ports have no additional wear, I am not sure where that rumor started. Large street ports are the engines that eat side seals, and J-port/monster bridge engines have trouble retaining coolant long term. Keep the coolant seal intact and keep the bridge 5mm wide and it will be completely fine.