DD reads lower than owens bill,in my experience 450bhp on owens was 310atw on DD or 393fwhp.
I don't think the external gate will make a massive difference although i don't know the characteristics of the owens unit.
 
also remember these turbos are tried and tested on 2ltr subarus and evos which seem to make more power due to better head design etc.i think the biggest 475bhp+ will make a more realistic 450bhp on our cars.Ben go for the mid sized turbo which should get you 410/420bhp.Mines still being tweaked at MRC at the moment but it's flowing 364g/s at 2.1bar peak holding 1.8bar to redline so it's roughly 450bhp to give you an idea of power.
steve

2.1bar! :scary: Thats going to get a bit toasty!

Are these turbos reliable at 2.1 bar?
 
DD reads lower than owens bill,in my experience 450bhp on owens was 310atw on DD or 393fwhp.
I don't think the external gate will make a massive difference although i don't know the characteristics of the owens unit.

thats quite a difference..
thanks for the info