Not necessarily...you wanna lower compression if your gonna run HIGH boost numbers...like 20+psi. As far as I know there is nothing wrong with throwing 10-15psi on a motor with 10.5:1 compression.
That's true...but if you have a daily driver boosted 10-15psi you are safer with a 9.5:1 compression.. depending on how much you are in the throttle..lol if I had a boosted app. Every stop light is the staging area!!! lol