WRX 0-60 5.7 Seconds 227 hp Boost 13.8psi 5 speed 16" Alloys
STi 0-60 4.7 Seconds 300 hp Boost 14.5psi 6 Speed 17" BBS Alloys
STi has intercooled with water spray cool-down and has a transmission cooler more comprehesive LSD and a centre DCCD Driver controlled diff.
Weight is up on the STi by another 200 lbs (probably the extra badges

)