Really?
Really??
Really???
Extractors/Headers
MWR 2GR-FE parts
Not trying to invalidate the figures or cast doubt, but just mentioning this so that others don't get misled. Correct me if I'm wrong, but those power figures of 200kW + at the wheels was on a DynoJet or similar dyno right? I'm not going to argue the way it works, but I personally have seen figures from these dynos stated to be higher than what a Dyno Dynamics dyno would show.
For comparative purposes, since the Dyno Dynamics dyno is more common here in Australia, I think the best example of what figures to expect would be to look at Chris' Aurion (00UCH) which has these exact same headers:
00UCH what a Aurion!!!!