I saw a show one time, they took an Impreza and put a high flow intake and exhaust on it and lost horsepower. Then had it tuned and it was well over the stock level.
Point being, our ECUs are picky and any little change in airflow needs to ecu work.
tuning all of that plus higher octane would be good plus removing the drive by wire delay is nice.
What are your plans for it in the future? All the mods you have mentioned even with a tune won't help the n/a all that much. You need forced induction.
08 Legacy 2.5i
Last edited by bomberlegacy; 01-02-2013 at 06:09 PM..