[/rant on]
you guys always nit-pick the little things but never quite see the bigger picture........................
an engine is an engine. the engines being talking about are 4G63 2.0 liter inline 4 with forged internals and EJ20 2.0 liter horizontal 4 with cast internals.
You guys keep getting stuck with emissions but forget about the after market

NOT EVERYONE CARES ABOUT CA EMISSIONS, get it
if the car came with forged internals we would see more WRX's with bigger after market gains, so what if its detuned from the factory if I have a good platform to start with I can see the overall gains with mods
I really dont care that I have the EJ257 with 300 hp if I can only get another 100 hp out of it before it blows(without changing the cast internals), while the 4G63 can support way more power with less mods, do to the fact they put it out on the market with better internals and detuned it for emissions. now you get cars like the FQ400, not CA emissions legal, but what did they change on the car? I bet it wasnt the pistons
[/rant off]