Just finished mapping mine before the final sprint of the season this weekend. We couldnt quite get the peak boost we wanted due to a limitation in the EcuTek MegaROM file which limits max wastegate duty to 90%, (we will ask EcuTek to see if that can be changed to allow the turbo to hit our target) but we are seeing 1.95BAR mid range, it looks like the turbo will pull 2.1BAR if we get the duties up.
Car goes on the rollers tomorrow, but Delta Dash Road dyno is showing it as producing about 470BHP/490LbFt.
Once the Sprint is over Owen is going to do a write up on the turbos and start marketing them, even before this last sprint we have guarateed a 1-2 in the championship, it's just a case of which of the two of us wins. (We have two cars with this turbo at the moment, mine is a forged 2.1 in a full weight JDM STi genuinely daily driven 12K mile/year road car, Pauls is an MY03 lightened Spec C with a stock engine.)
Wastegates on this Owen Turbo are inconel specials, one of the issues with the stock turbos is the size of the waste gates and the materials, it's not uncommon for the waste gates to not shut properly due to distortion and they can be restrictive at the top end due to their size. Uprating the actuators isnt actually fixing the fundemental problems with the stock turbo's.