Guys I have a newage wrx and has the prodrive kit fitted. What else is there that I can do to improve performance. Dont want to go daft but prob about £500 ish depending on what kind of gains I can recieve.

 

A rear adjustable anti-role bar and front anti-lift kit (from a reputable manufacture such as whiteline), followed by a proper laser 4 wheel re-alignment by somebody such as powerstation. IMO the best £500 ish I have ever spent on it. (53 plate blobeye)

 

Remove up-pipe cat, replace downpipe cat with sportscat + remap.

 

some exhaust mods (+ remap) will reduce the turbo lag and improve the driving experience