i'm 17 and got my impreza sport special and it already has exhaust system and de cat and was just wondering any more ways of getting more power and how much price wise roughly ? without getting turbo lol ( dont have deep pockets lol ) many thanks

 

At first look for headers(or just get is ported,ask here Harvey)
Second free flowing intake(silicone air intake)
Less restrictive exhaust
and after this is everything expensive:
Lightweight flywheel
Stronger clutch
Lighter crankshaft pulley
Re-profiled Camshafts
High-compression pistons
WRX or STi injectors
Upgraded fuel pump
and remap which give you max.on non-turbo i think 7-15BHP,but in this i'm not sure,mate
And for more info try this
http://www.imprezasport.net/forums/i...showtopic=6666