Personally im not a fan of
Personally im not a fan of the WRX twin scroll turbo currently work as a Technician and have seen many Wastegate Failures on these causing fluctuating boost pressures eventually leading to a serious lack of power. The EJ257 its a super bad engine needs more refining to remove these troubles such as cracking oil pick ups causing oil starvation leading the bearing failure. They have redesigned other motors and the EJ257 is long overdue for an upgrade in its design.