Originally Posted by earlyapex

If you track at all, EVO hands down.

I had a 04 WRX (I know it's not an STi) with all the track bits (JICs / Stoptechs / accessport /etc etc etc), sold that and bought a 05 EVO MR...

I took it to thunderhill with just a turboback and MBC , stock suspension and tires, and I was 3 secs faster than with my fully modded WRX.

Now it has some more mods and the spread is huge now.

Also, with just these mods: MBC/720cc injectors/272cams/Cam gears/MR-BOV/TBE/Fuel Pump/Ecu Plus engine mangement, (stock turbo, IC pipes, FMIC)

I made this on the gruppe-s dyno: (91 octane is base and 100 is test)