Hi Guys. I'm running a standard 2005 wrx sti (Type UK) 2.0 litre. I believe they are about 265 bhp. I am looking at putting a full system on it and getting rid of the cat (or cats). Can anyone recommend what works well on this car and is it advisable to change the filter to, maybe a K & N or something similar to help it breath more easily. Been looking at a full milltek system but they are costly.
Im looking for a decent hp gain an improved sound. Thanks in advance.

 

Check Cobra Sports website mate good quality systems that wont cost you an arm n a leg. Ive got the 3" Trackfriendly system and im well happy with it..

 

Great thanks bud appreciate that