Originally Posted by LostMarine
it's just good maintenance to do some of those things. Obviously if you want the turbos to run at optimal performance, you want everything that is related to those turbos being at their optimal too. So new vacuum lines and better clamps around the air flow track will only aid in hopefully deterring any boost leaks.
the pumps are going to be ideal for certain contents of corn and to maximize power figures with back end flashes.
not 100% sure on the n54, but i know many cars it's recommended to go with different plugs and better coils when you're damn near doubling power output from stock. "