Hi all.

Great community. I have a 2005 Legacy GT and I would like opinions on the Subaru owners about adding a K&N air intake filter and the top filter also K&N. Additionally, do I need a complete new exhaust system from the manifolds since I am putting more air into the engine or with a Cat-Back system only will I be fine? Also, count that I 99% sure will go with the ECU reprogramming, will that also affect the exhaust decision?

Will anybody please reply!!!????